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Oxford Sparks Big Questions

English, Sciences, 1 season, 124 episodes, 1 day, 3 hours, 52 minutes
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'Will my bacon sandwich kill me?', 'Is vaping better than smoking?', 'How do you become an astronaut?' - just some of the Big Questions we ask some of the brightest minds behind Oxford science. Join us in each podcast as we explore a different area of science.
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How do I keep my house cool without air conditioning?

Summer is here, and with heatwaves forecast, how do we keep our homes cool without relying on air conditioning?   In the UK, soaring summer temperatures can be brief but powerful. So, what can we do? Nicole Miranda, from the Department of Engineering, shares practical, energy-efficient and eco-friendly strategies to help you stay comfortable during the hot months. And yes, ice creams are encouraged!   This is the final episode of this season. We hope that you have enjoyed learning the science behind the many weird and wonderful aspects of our world. If you have a big question, get in touch and we will try to find you an answer in the next season.
7/17/202413 minutes, 52 seconds
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What time is it on the moon?

Scientists are returning to the moon, but when they get there, what time is it? Dr Carly Howett from the Department of Physics explains the basics: what time is, and how we found a globalised way of understanding time zones so we can meet for a 3pm coffee or international video call, and everyone is in the right place at the right time. But how does that translate to space and why could the consequences of incorrect timekeeping be disastrous for space craft docking missions? If you want to get to grips with the weird and wonderful world of lunar time, then tune in to our latest podcast to find out more!
7/3/202414 minutes, 45 seconds
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How can origami help make energy?

Discover how the ancient art of origami is revolutionising sustainable energy! Researcher Jingyi Yang, from the Department of Engineering Science, has loved origami since childhood. Now she’s channelling that passion to tackle engineering challenges. Using the intricate papercraft to develop clam-like models, Jinyi’s creative engineering may be the key to improving the efficiency of energy produced by the waves hitting the UK’s coastline.  Find out more about this imaginative approach to scientific discovery in this podcast!
6/19/202412 minutes, 37 seconds
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How do you fossilise a brain?

When you think of fossils, you probably imagine dinosaurs. But did you know that soft body parts, like the brain, can become fossils too?  In this episode, forensic anthropologist Alexandra Morton-Hayward explores the science of brain fossilisation. Skeletons have been found in wells, Incan temples, salt mines and many other unusual locations, often with no other organs, hair or skin preserved. With only a brain nested in the skull, we are asking … how can this happen? Listen now to find out and discover how this research is unravelling ancient human history!
6/5/202411 minutes, 46 seconds
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How do earworms work?

Have you ever had a song stuck in your head that you just can't shake? A few bars or lyrics that just keep looping all day long? Well, we have delved into the science behind 'earworms' with Dr Jacob Kingsbury Downs from the Faculty of Music. A melodic mix of musical imagery, auditory neuroscience, memory and impressive compositions can leave a little ditty echoing in our minds long after the last note has played. But what you really want to know is how to get rid of an earworm, right? Tune in to find out! 
5/22/202413 minutes, 32 seconds
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How are seals affecting fishing catches?

Are seals the fishermen's friends or foes? The UK is home 35% of the world’s grey seals and we know they like to get their flippers on many of the same fish as we do. So, how are seals impacting the fishing industry? In our latest podcast, Dr Claire Tanner from the Department of Biology explores the unseen conflict beneath the waves and the complex dynamics between these marine mammals and fisheries. Tune in to find out how understanding more about the behaviour of the UK’s seal populations can shape marine management policies.
5/8/202413 minutes, 11 seconds
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Why am I killing my house plants?

House plants can be a cheerful pop of colour in your home. But do you find after the initial burst of life, your plants start to fade, looking sad and unhealthy?   M Garrido Davies, from the Department of Biology, shares top tips for helping house plants to flourish, starting with learning more about the biology of how plants grow in their natural environment.   Did you know that when you add too much water to your house plants, it starves their roots of oxygen, damaging the root system and actually creating a drought? And have you considered how much light and ventilation your household greenery is getting?   Discover more biology behind the blooms in this podcast!
4/24/202414 minutes, 48 seconds
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How are volcanoes formed on other planets?

Volcanoes are pretty amazing! But how do they work on other planets?   Take Mars – it has the largest volcano in the solar system! But volcanologist Tamsin Mather reveals that the red planet is now considered geologically dead, with no volcanic activity for around 500 million years. How do we know how this volcano formed then? Well, space missions have put probes and landers on Mars’ surface, providing evidence of a long lost hot spot beneath the surface.   What about the rest of the solar system? There are glimpses of volcanism on Venus and Jupiter’s moon, Io, too. But how do scientists know? Listen to our latest podcast to find out!   If you would like to learn even more about the volcanoes of Earth and beyond, why not give Tamsin’s new book, Adventures in Volcanoland, a read!
4/10/202413 minutes, 59 seconds
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Can we talk to bees?

We are out in the wild today talking to bees!   In this behind the scenes episode, we visited Dr Rachel Parkinson’s bee recording studio to see insect neuroscience research in action.    You might know that honeybees communicate with each other using the waggle dance, a minute choreography that shows other bees the way to the flower buffet. But little is known about how bumblebees communicate.   To understand more about bee behaviour, Rachel has created a series of small arenas with cameras and microphones. Using AI, visual and audio recordings can be matched up to create a database of sounds and behaviours which will, in time, hopefully reveal the secret language of bees!
3/27/202415 minutes, 23 seconds
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Why are people obsessed with how cute cats are?

Cats are pretty adorable! Those big eyes, fluffy paws and cheeky personalities mean that most people find felines cute. But what is the science behind this reaction? Neuroscientist Professor Morten Kringelbach reveals how special technology can track what happens to signals in the brain in response to sounds and images of babies and small animals. In just a thousandth of a second, our brain decides that something is cute. This almost instantaneous cuteness reaction is thought to be a deep-rooted evolutionary feature of humans, encouraging us to look after young babies and animals to help species to survive. Cats (and other fluffy pets) can bring us so much joy, so next time you find yourself smiling at a cat video or your beloved pet, make sure to spread the love and bring someone else a dose of happiness.
3/13/202414 minutes, 58 seconds
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How freaked out should I be about bed bugs?

You might have seen them in a hotel. You might have read about them in the news. Maybe you’ve seen them star in social media videos filmed on the London underground. But should we really be worried about bed bugs?   The little critters evolved from feeding on bats and birds to humans thousands of years ago and were part of society for hundreds of years. But with the invention of synthetic pesticides, bed bug populations declined significantly after the Second World War. However, as pesticide resistance grows and the world becomes increasingly connected, bed bugs are making a resurgence.   Entomologist Liam Crowley, from the Department of Biology, tells us what to look out for and how to keep them at bay in our latest podcast. But don’t worry, they’re not as common as you might think!
2/28/202411 minutes, 32 seconds
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When did we start kissing?

Have you ever considered when kissing first started? Who, or what, first decided that this was a good way to show affection?   Ancient historian, Troels Pank Arbøll, and hedgehog researcher, Sophie Lund Rasmussen, joined forces to attempt to find an answer. Cuneiform scripts, which are the world’s oldest written text, have the first mention of romantic kissing in a mythological narrative dating back to 2500 BCE.   But animals can also help us to answer this question. Bonobos have been shown to kiss romantically to strengthen pair bonds and assess a mate’s suitability. Perhaps the origins of kissing could be much older than human history! Find out more by listening to our latest podcast.
2/14/202412 minutes, 23 seconds
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How do you stay warm in your house without central heating?

How do we battle the energy use and soaring costs required to keep our homes warm? We spoke to Dr Brenda Boardman from the Environmental Change Institute about the best ways to keep out the winter chill. Did you know that draughts not only let cold air in, but they also push the warm out of your home? And that sitting or sleeping next to external walls can make you colder? Discover simple and inexpensive methods you can try to stay toasty, starting with the idea of heating the human rather than the home. Tune in to learn more!
1/31/202414 minutes, 28 seconds
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How will climate change affect wine?

People have been interested in wine growing and quality vintages since the Roman times, but as the climate warms, what does this mean for the future of wine growers in the UK (and beyond)?   Andrew Wood, from the Department of Biology, has been studying the records of wine critics, which reveal much more than whether the bottle is a good vintage or not. The vintage can tell scientists what the growing conditions were like for the grapes in a given year – was it hot or cold? Was there flooding or drought? Was light more intense?   As the UK experiences more ‘BBQ summers’, we may see new grape varieties flourishing, producing new flavours of wine. But it’s not good news for all vineyards. Find out why in our latest podcast!
1/17/202415 minutes, 40 seconds
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What are the odds of a white Christmas?

As we count down to the festive season and the days get colder, will we see a white Christmas this year? In the last episode of the Big Questions podcast for 2023, Dr Neven Fučkar from the Environmental Change Institute tells us more about the science behind weather forecasts and how climate change is impacting Earth’s weather patterns. Using advanced modelling, scientists can predict weather patterns to different degrees of certainty. So in a few days’ time, we should know whether we will see snow on the big day. But what do the predictions look like for the next five or ten years? Find out in this podcast! We hope you have enjoyed getting into the science of the everyday questions you want to know the answers to. We’ll be back in the new year to share more science from the University of Oxford. See you in 2024!
12/13/202310 minutes, 16 seconds
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How do you reintroduce lions?

Lions are iconic species, but they are threatened with extinction. In Zambia, researchers and conservationists are working together to find ways of conserving these majestic animals and preventing them from becoming by-catch of poaching. In this new episode of the Big Questions podcast, we speak to Dr Egil Dröge from the Department of Biology to share the steps involved in bringing lions back to a national park in Zambia. Careful selection of a few young female lions which are genetically similar to those lost from the national park, and collaboration with local communities could pave the way for lions to return to the area over the next decade.
11/29/202314 minutes, 3 seconds
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Does banning smoking work?

As the UK government proposes new plans to reduce the number of people who smoke, we talk to behaviour change researcher Nicola Lindson from the Nuffield Department of Primary Care Health Sciences to find out how the plan would work. Could we see a generation that is smoke free? Would banning flavours in e-cigarettes stop children from taking up smoking? Tune in to the latest episode of the Big Questions podcast to find out more.
11/15/202311 minutes, 25 seconds
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Why are deep fakes happening?

Welcome to the new series of the Big Questions podcast, where we ask Oxford scientists to shed light on everyday questions that you really want to know the answer to.   Remember those photos or videos online that don’t look quite right? Perhaps you’ve heard a celebrity’s voice somewhere unexpected? In this episode, we chat to computational social scientist Dr Bernie Hogan from the Oxford Internet Institute about deepfakes; media synthetically generated by technology to capture someone’s likeness. As AI and machine learning technology develop rapidly, how can we regulate the creation of deepfakes to know what is real? Tune in to find out!
11/1/202313 minutes, 58 seconds
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What's the cool stuff that we've learnt from the James Webb Space Telescope?

About a year ago, we asked astrophysicist Dr Becky Smethurst why the James Webb Space Telescope is such a big deal. Her answers were pretty exciting, to say the least. So, in the months that have passed since then, what has it found out? What mysteries of the universe has it begun to unravel, and has it lived up to expectations? We got back in touch with Becky for an update.  This is the last episode in this series of the Big Questions Podcast! We hope you've enjoyed learning about everything from Martian craters to the human microbiome. Be sure to look out for our next series, beginning in October 2023, and until then, you can find a catalogue of our episodes on the Oxford Sparks website. Have a big question that you'd like answered next series? Let us know on social media!
7/5/202317 minutes, 30 seconds
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Would you want to meet an alien?

What might an experimental petrologist (someone who makes rocks in the lab) and an immunologist (someone who studies the body's defence system) have in common? Well, it turns out, a shared interest in iron might be one thing. And what does all this have to do with aliens, and, specifically, whether you would want to meet one? Well, you'll have to listen to find out! With Prof Jon Wade from the Department of Earth Sciences.
6/21/202316 minutes, 23 seconds
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Could 'Jurassic Park' actually happen?

"Life finds a way"...This year marks the thirtieth anniversary of the release of Stephen Spielberg and Universal Studio's dinosaur masterpiece 'Jurassic Park'. A rousing soundtrack, gutsy kids, and graphics which have stood the test of time remarkably well - the film has undeniably become a classic. But - here's the big question - could it actually happen? Using today's technologies, could we actually extract ancient dinosaur DNA from blood-sucking mosquitoes preserved in amber? And then use that DNA to clone a prehistoric beast? We ask palaeontologist Dr Ricardo Pérez-de la Fuente to help us sort the science fact from the science fiction.   
5/31/202314 minutes, 9 seconds
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How can we use sound waves to eliminate infections?

Many of us will have had to deal with a bacterial infection at some point or another. The solution? Often, antibiotics. But as the issue of antibiotic resistance becomes more and more of a concern, might there be an alternative to tackling bacterial infections with drugs? We chat to biomedical engineer Dr Sara Keller about how sound waves could potentially be used to break down bacterial cells.
5/17/202314 minutes, 18 seconds
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How do you convert CO2 into jet fuel?

Increasing levels of CO2 in our atmosphere are a big cause for concern. So what if we could find a way to not only remove some CO2 from the air, but turn it into something useful too? That's exactly what Dr Tiancun Xiao and his team have been working on...and they've found a way to turn CO2 into jet fuel!
5/3/202314 minutes, 5 seconds
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How do you use social media to deliver humanitarian aid?

Forced displacement of human populations owing to conflict or natural disasters is very difficult to measure. During these crises, the traditional methods of assessing changes in populations - which mostly rely on surveys - are simply not possible. We chat to Dr Douglas Leasure from Oxford's Leverhulme Centre for Demographic Science about how his team have been using social media data to assess the internal displacement of populations in Ukraine since the Russian invasion in February 2022, in order to help ensure humanitarian aid is delivered as effectively as possible. If you would like to read the original research paper about Doug's work, you can access it here: 'Nowcasting Daily Population Displacement in Ukraine through Social Media Advertising Data'. You can find out more about the work of researchers at the Leverhulme Centre for Demographic Science in this Oxford Sparks micro-documentary: 'Demography: Understanding Our World'.  
4/19/202314 minutes, 46 seconds
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How has life expectancy changed after the pandemic?

Demographers (researchers who study the statistics of human populations) look at factors such as birth rates, death rates, migration and life expectancy. But what exactly is meant by the term 'life expectancy'? How is it calculated, and how has it changed after the pandemic? We speak to Prof Jennifer Dowd from the Leverhulme Centre for Demographic Science to find out. You can find out more about Prof Dowd's work in our micro-documentary Demography: Understanding Our World: https://www.oxfordsparks.ox.ac.uk/videos/demography-understanding-our-world/
4/5/202315 minutes, 44 seconds
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Can you make a dengue fever forecast?

More than half the world's population is at risk from dengue fever, a viral infection that is spread via the bite of an infected mosquito. While some cases of the disease can be mild, others can be extremely dangerous and even fatal - particularly if someone has contracted the virus previously. When cases of dengue fever are high, those at risk can take some preventative measures, such as wearing clothing that covers as much skin as possible, using mosquito nets at night, and avoiding standing water. As such, some way of predicting high levels of the virus before they arrive would be invaluable. This is exactly what Dr Sarah Sparrow and her colleagues at the DART (Dengue Advanced Readiness Tools) project are hoping to achieve - using climate data to create a forecast, similar to a pollen forecast, for dengue fever.
3/22/202313 minutes, 5 seconds
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Can my gut health improve my mental health?

Our gut microbiome (that's all the microorganisms - such as bacteria, viruses and fungi - living in our gut) is really important for healthy digestion. But did you know that it's also linked to our mental health? In this episode of the Big Questions Podcast we chat to neuroscientist Prof Philip Burnet from Oxford's Department of Psychiatry about how our gut is connected to our brain, and how taking prebiotic and probiotic supplements could even help in the treatment of mood and psychotic disorders.
3/8/202313 minutes, 46 seconds
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Why do research on research?

We've talked about a lot of different types of research on this podcast...from investigations into drought, to space exploration, to the future of food. But what about researching 'research' itself? That's right, on this week's episode of the Big Questions Podcast, we're going meta! We chat to Dr Patricia Logullo, a meta-researcher from the Nuffield Department for Orthopaedics, Rheumatology and Musculoskeletal Sciences, about why it is so important to examine the practice of research itself, and how scientists such as herself help to ensure research reporting is transparent, complete and reproducible.   
2/22/202311 minutes, 35 seconds
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How could spider sex unlock secrets to engineering?

Not everyone is the biggest fan of spiders...we know that. They might not be the first thing that springs to mind when it comes to romance, either! But, you've got to admit, when it comes to engineering, they're pretty incredible. Capable of making up to seven types of silk, and able to sense vibrations through thousands of 'ears' on their legs, there's a lot we can learn from spiders when it comes to new materials and sensor technologies. So, on this year's Valentine's episode of the Big Questions Podcast, we're asking arachnologist Dr Beth Mortimer how spider mating rituals could help us become better engineers.
2/8/202312 minutes, 55 seconds
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Is the metaverse doomed?

Ask an internet aficionado what the 'next big thing' is, and they might respond with 'the metaverse'. This is the idea that we could soon be wandering in a virtual world - a kind of global, immersive video game. But are we really just one VR headset away from paradise? Or is the metaverse doomed before it's even really got off the ground? We chat to Dr Bernie Hogan from the Oxford Internet Institute to find out if Big Tech's confidence in the metaverse might be misplaced.
1/25/202316 minutes, 24 seconds
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Can you cure jet lag?

If our internal body clock is telling us it's 3am, but the external environment is telling us it's 12 noon, that's called jet lag. It's a mis-match between what's going on inside our bodies and what's happening outside. Those who have travelled abroad - particularly to somewhere in a significantly different time zone - will be familiar with the feeling, but it's not just stepping off a plane that can cause it. 'Social jet lag' is a particular problem for shift workers, for example. An out-of-sync body clock can make us feel terrible, so, is there a cure for the condition on the horizon? We speak to neuroscientist Prof Aarti Jagannath from the Nuffield Department of Clinical Neurosciences about her work investigating potential drug treatments for jet lag.
1/11/202314 minutes, 44 seconds
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Should I feel guilty eating turkey at my Christmas dinner?

While the tradition of eating turkey at Christmas can be traced back to Henry VIII, it's really only been a staple part of our Christmas dinner since the early 20th Century. However, in the UK, it's now hard to imagine a Christmas spread without a turkey at its centre! But - with meat consumption linked to negative impacts on both our health and the planet - should we feel guilty about enjoying this part of the festive feast? In the opinion of social psychologist Elif Naz Çoker, the answer is no, you shouldn't feel guilty - turkey is a wonderful treat for a special occasion. However, we should try and reframe our attitudes towards meat consumption, and see it as an occasional indulgence rather than a daily staple. Join us for this Christmas episode of the Big Questions Podcast, where Elif shares some of her tips for making the transition to a less meat-centric diet.
12/14/202211 minutes, 45 seconds
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How can a simulation help treat kidney stones?

Around 10% of us will experience kidney stones at some point in our life. They occur when waste products in the blood form small crystals, which gather together in the kidneys to form hard lumps. Small kidney stones (
11/30/202211 minutes, 28 seconds
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How were new craters on Mars discovered?

When a space rock smashes into the surface of a planet, a hole - or crater - is formed. New craters might be relatively straightforward to identify on Earth, but what about on other planets, such as Mars? In this episode we hear from Dr Ben Fernando, a researcher from Oxford's Department of Physics and a scientist on NASA's InSight mission, about the techniques used to discover new craters on the red planet.
11/16/202212 minutes, 38 seconds
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What makes the human brain so special?

We often hear that we're remarkably similar to our primate relatives, both in terms of our genetics and our behaviour. We're social beings. We use tools. But only humans have come to dominate the planet - why? Could the answer lie in the small differences between the human brain and that of other primates? In this episode of the Oxford Sparks Big Questions Podcast, we talk to neuroscientist Dr Rogier Mars about what makes the human brain so special. Please note that Dr Rogier Mars and his team work on the brains of non-human primates that have died of natural causes, and have subsequently been donated for research purposes.
11/2/202210 minutes, 49 seconds
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Why is the UK still in a drought?

Here in the UK, we have a reputation for grey, drizzly weather. But there's no denying that this summer was HOT and this summer was DRY. With soaring temperatures and little to no rain for weeks on end, it was no surprise that we found ourselves in a drought, with a ban on hosepipes declared and careful use of water encouraged. But, did you know that we're still in that drought? In this episode of the Big Questions Podcast we chat to Dr Anna Murgatroyd to find out what characterises a drought, why we're still in one, and - faced with a changing climate - how we can maintain access to a safe and reliable water source into the future.
10/19/202210 minutes, 44 seconds
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Why is the James Webb Space Telescope a big deal?

Are we alone in the Universe? What exactly lies at the centre of our galaxy? Just like our podcast, the James Webb Space Telescope aims to answer some *very big questions*. Launched on Christmas Day 2021 and hurtling towards an orbit 1.5 million miles from the Earth, the JWST (as it's known to those in the business!) is a follow-up to the Hubble Space Telescope - and it's three times bigger. Decades in the making, the JWST will begin collecting and transmitting scientific data in July 2022, making this a really exciting time for astrophysicists such as Dr Becky Smethurst. We catch up with her to find out more.
6/15/202214 minutes, 54 seconds
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What is green steel?

Steel has become an essential commodity in modern society - used in everything from our cars and our buildings to the cutlery we use to eat our dinner. Unfortunately, the process used to traditionally produce steel (mining iron ore and combining it with carbon in a blast oxygen furnace) releases a huge amount of CO2. So, is there a cleaner way of producing steel? In this episode, we chat to Prof Barbara Rossi about 'green steel', and how it could improve the sustainability and resilience of the construction industry. 
6/1/202211 minutes, 40 seconds
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How do you create autonomous robots that can investigate under the sea?

How do you retrieve data from sensors embedded in underwater settings - such as those monitoring ecosystem change, for example? Well, when human divers aren't an option (which is often the case) it's over to the autonomous robots! In this episode of the Big Questions Podcast we speak to Prof Nick Hawes from the Oxford Robotics Institute about the challenges - and possibilities - that such robots bring to the field.
5/18/202214 minutes, 42 seconds
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How do you grow the perfect tomato?

Is there anything nicer than a fresh, juicy, home-grown tomato on a summer's day? Whether you like them sliced up in a sandwich or blended into a delicious sauce, in this episode of the Big Questions podcast we reveal the secrets behind growing the perfect tomato. Let us transport you to Trap Grounds Allotments in Oxford, where Emily is joined by plant scientist Christian Norton, who is ready to reveal his five easy steps to the ultimate crop!
5/4/202212 minutes, 47 seconds
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How is misinformation about the war in Ukraine spreading?

Misinformation about the war in Ukraine - and countless other topics, such as the pandemic and climate change - spreads like wildfire online. It aims to confuse people, make them question their own knowledge, and ultimately raise suspicion and doubt. But how exactly does this misinformation spread, why is it so prevalent on social media, and what are the various platforms doing to help prevent it? We chat to Dr Aliaksandr Herasimenka from the Oxford Internet Institute to find out.
4/20/202215 minutes, 4 seconds
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How does a pandemic end?

Masks, social distancing, lockdowns. We've become intimately familiar with numerous COVID-19 control measures over the past two years. Now, with most restrictions gone (at least here in England), does that mean that the pandemic is really over? In this episode, we chat to Erica Charters, Professor of the Global History of Medicine at the University of Oxford and Principal Investigator of the 'How Epidemics End' interdisciplinary project. 
4/6/202214 minutes, 39 seconds
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Why do we develop bad habits?

From biting our nails to idly scrolling on our phones, we all have those habits we wish we didn't. In this episode of the Big Questions Podcast, we chat to neuroscientist Charlotte Collingwood about what makes a habit, why we develop them, and how we might go about kicking a bad habit.  
3/23/202211 minutes, 35 seconds
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Is the energy crisis going to get worse?

Over the past year, we've seen our energy bills reach unimaginable heights. The war in Ukraine is having devastating effects for Ukrainians and creating ripples for international fuel costs. We're now in the midst of a 'perfect storm' when it comes to energy supply - but where are we in the story? Is the energy crisis going to get worse, and what are the potential solutions to bringing those prices down? We chat to Phil Grünewald who considers the current situation a wake-up call to improve our housing stock, diversify how we heat our homes and to use new and sustainable fuels that could change the geopolitics of energy for good.
3/9/202212 minutes, 8 seconds
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Is ordering a pizza bad for the climate?

In this episode of the Big Questions podcast, we're talking about one of our favourite guilty pleasures - ordering a pizza! From the machinery required to harvest the wheat for the dough, to the cardboard packaging your finished pizza is delivered in, we're considering all aspects of a pizza's journey and asking: is ordering a pizza bad for the climate? Environmental scientists Eleanor Hammond and Dr Mike Clark are here to provide some answers, and tell us about '4 steps 4 the Earth'. (Don't worry, they're not banning pizza!)
2/23/202214 minutes, 48 seconds
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How do you monitor mosquitoes using their sound?

What do you think of when someone says “the most dangerous animal in the world”? A lion perhaps? Or a poisonous frog? Well, one species of mosquito – Anopheles gambiae – is often referred to as such, owing to its enhanced ability to transmit malaria, a deadly disease which led to 627,000 deaths in 2020 alone. A. gambiae isn’t the only species of mosquito that is able to effectively transmit malaria, and each species exhibits different behaviours and requires a different management strategy. But how do you tell them apart? In this episode, we chat to Dr Marianne Sinka, Senior Researcher on the Humbug Project (https://humbug.ox.ac.uk/) which uses smartphones to identify mosquito species using their unique ‘hums’.
2/9/202212 minutes, 18 seconds
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How can we improve endometriosis treatment?

Did you know there are different types of pain? In this episode of the Big Questions Podcast, we chat to Dr Lydia Coxon, a researcher in the Nuffield Department of Women's and Reproductive Health at Oxford. Lydia is looking at the mechanisms that cause pain in patients with endometriosis - a common gynaecological condition where tissue that normally grows inside the womb is found outside the womb. Through her research she hopes to better understand the type of pain that endometriosis causes, so that it can be treated more effectively.
1/26/202215 minutes, 28 seconds
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Why build a magnetically shielded room?

One way to delve deep into the ancient history of the Earth - or other planetary bodies for that matter - is to examine the magnetism recorded by rocks. Kind of like a fossilised magnetic fingerprint. But trying to do this in an environment where another magnetic field exists (i.e. everywhere on Earth!) is pretty challenging. Enter the 'magnetically shielded room'! Join us as we catch up with Prof James Bryson from Oxford's Department of Earth Sciences, and find out all about this very special DIY project. 
1/12/202212 minutes, 45 seconds
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Why is Rudolph's nose red?

"Rudolph the red-nosed reindeer, had a very shiny nose..." Many of us will be very familiar with Santa's famous antlered friend. But did you know that many reindeer actually do have red noses? But why? In this festive episode of the Big Questions Podcast, we ask Oxford polar biologist Ignacio (Nacho) Juarez Martinez to share some of the reasons we find red pigments in animals, and to explain why he thinks Rudolph's nose is so red!
12/22/202111 minutes, 8 seconds
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How do you tackle hate speech one emoji at a time?

Online communication channels are popular, to say the least. For instance, there are 187 million active Twitter users per day alone. Sadly, these open channels of communication also open up the potential for harm, through online hate speech. The problem is so large that we require AI to help detect it. But what about when it comes to emoji? According to some reports, ten billion emoji are sent in messages around the world every day. When the same emoji can have vastly different meanings depending on the context, how can we use AI to detect their use as hate speech? We speak to Oxford AI researcher Hannah Rose Kirk to find out.
12/8/202114 minutes, 54 seconds
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Umm...Should I be wearing a mask?

In the early days of the COVID-19 pandemic there was a lot of confusion, as we all tried to figure out what we should and shouldn't do to best protect ourselves and others. Fortunately, we now have more definitive answers to some of our most pressing questions - which are backed-up by data - including "umm...should I be wearing a mask?". As COVID cases are again on the rise across Europe, this is the question we're putting to demographer and behavioural scientist Prof Melinda Mills.
11/24/202115 minutes, 23 seconds
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How can satellites prevent mining disasters?

Satellites have been orbiting our planet for the past few decades. We might be familiar with how they can be used to track weather, or beam television and phone signals around the world. But did you know, that by capturing images of the Earth outside the visible spectrum, they're able to offer a unique perspective of the ground beneath our feet? They could even - as Earth observations specialist Maral Bayaraa tells us - provide a remote early warning system for an environmental catastrophe, dam collapse.
11/12/202111 minutes, 27 seconds
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How do you stop megafires?

From California to Greece to Australia, it seems like every time we switch on the news there's another wildfire report. Some fires are natural - in fact, they're a fundamental part of many ecosystems - but the severity and frequency of the wildfires we are now witnessing is beyond natural levels. Human-ignited "megafires" are causing devastation across the planet. Climate change and inadequate ecosystem management are key contributors to the problem, but what are the possible solutions? In this special COP26 edition of the Big Questions Podcast, we ask Dr Imma Oliveras all about megafires.
11/3/202112 minutes, 5 seconds
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Could chocolate go extinct?

Chocolate. It’s rare to find anyone who isn’t partial to a square or two of this delicious treat. But is its very existence in danger? (*Cue worried faces.*) In this episode of the Big Questions Podcast we chat to chocoholic and researcher Acheampong Atta-Boateng, who studies the relationship between cocoa trees and their micro-pollinators. We hear about how monocropping, pesticides and climate change all pose a risk to the cocoa tree and ask – could chocolate go extinct?
10/20/202111 minutes, 52 seconds
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Should all robots have an ethical black box?

Nowadays, the idea of encountering robots in our daily lives isn't pure science fiction. Many of us interact with AI every day, and the use of robots in, for example, healthcare settings, is already on the horizon. But what if something goes wrong? The RoboTIPS team at the University of Oxford is developing an innovative feature - an 'ethical black box' that acts like a data recorder for use when adverse incidents or accidents occur. How would it work? Well, in this very special episode of the Big Questions Podcast, we're going to demonstrate - through the medium of theatre! That's right, we've made our very own radio play! Sit back, relax, and let us present the Oxford RoboTIPS players in "The Case of the Fall".
6/23/202111 minutes, 35 seconds
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Is a snack tax on the horizon?

Do you remember when the price of fizzy drinks in the UK went up slightly a few years ago? Soda fans, perhaps you remember all too clearly...! Well, this was because the UK government introduced a sugar tax (or the Soft Drinks Industrial Levy, to be precise), requiring manufacturers to pay a tax on sugary drinks - a cost which was then passed on to the customer. Following the success of this tax (perhaps not for your pocket, but fizzy drinks now contain less sugar) we're asking public health nutritionist Dr Lauren Bandy - is a snack tax on the horizon?
6/9/202111 minutes, 46 seconds
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What's an arboretum anyway?

An arboretum could be described as a "living library". A beautifully curated collection of woody plants from across the globe, each one carefully labelled and managed. In this episode of the Big Questions Podcast we chat to Ben Jones, Arboretum Curator at the University of Oxford Botanic Garden and Harcourt Arboretum, about what makes an arboretum so special. 
5/26/202113 minutes, 50 seconds
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Did the pandemic make us moodier?

Lockdowns, social distancing, restrictions on 'normal' activities - we've all been affected by the COVID-19 pandemic. But how has it impacted on our mood and mental wellbeing? We chat to Dr Maxime Taquet from the Department of Psychiatry about 'mood homeostasis' (the interplay between people's activities and the way they feel), and how this has been affected over the past year. He also tells us about a new study into the impact of COVID-19 infection itself on mental health.
5/12/202111 minutes, 52 seconds
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Will climate change kill off the great tits?

Their distinctive 'teacher teacher' call is synonymous with British gardens, but great tits are facing a big problem - climate change. As our springtime becomes warmer and begins earlier, peak caterpillar abundance is also shifting earlier. As a crucial food source for great tit chicks, this is cause for concern. In this episode of the Big Questions Podcast, we catch up with ecologist Dr Charlotte Regan, one of the scientists who monitors the Wytham Woods great tit population, which has been systematically studied since the 1960s. 
4/28/202112 minutes, 4 seconds
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Can we build an eco-friendly aeroplane?

Remember those days when it was possible to climb aboard a plane and jet off around the world? Well, while we might be yearning for foreign shores, there's no denying that air travel comes with a big ol' carbon footprint. But is it possible to make aeroplanes 'greener'? We chat to Dr Chiara Falsetti, a researcher at the Oxford Thermofluids Institute, who is looking at ways to improve the cooling mechanisms of aircraft engines, to boost their efficiency and ultimately make flying more sustainable.
4/14/202111 minutes, 42 seconds
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Why are we searching for water on the moon?

The moon may be the closest planetary body to us, but we still have a lot to learn about it. For example, what is the water-cycle like on an airless body such as the moon? How much water can be found there, and could we one day utilise this water for space exploration? In this episode of the Big Questions Podcast, we chat to Dr Katherine Shirley, a planetary scientist at the University of Oxford who is also a member of the science team for NASA's Lunar Trailblazer mission. A hydroponic station on the moon? Maybe it's not just sci-fi fantasy...
3/31/202111 minutes, 24 seconds
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Has lockdown made me bad at sleeping?

We're over a year into the coronavirus pandemic, and it's affected our lives in many ways - including, for many of us, how we sleep. You may have experienced changes to your sleep pattern (particularly if you waved goodbye to your commute last March), your quality of sleep, or even had some very weird or vivid dreams! If so, you're not alone. Join us as we chat to sleep expert Prof Colin Espie about his latest research, which looks at the impact of lockdown on sleep across 14 European countries.   
3/17/202114 minutes, 56 seconds
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Do all lions sound the same?

If you've ever been lucky enough to hear a lion roar (whether that's at the zoo or in the wild - hopefully at a safe distance!), you'll know that it's a truly bone-shaking experience. But do lions have a unique roar, or do they all sound the same? How could knowing this help with conservation efforts? Join us for this episode of the Big Questions podcast as we chat to lion biologist Dr Matthew Wijers - a researcher who has trawled through a whopping 1440 hours of lion audio, all in the name of science!
3/3/202113 minutes, 39 seconds
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When did dogs become our best friends?

In this year's Valentine's episode, we're exploring one of the most special relationships around. That's right - the one between us and our dogs! We often hear pooches described as "(wo)man's best friend", but for how long has this been the case? Join Prof Greger Larson, an expert in palaeogenomics and bio-archaeology, as we journey back thousands of years to explore the possible origins of this remarkable inter-species bond.   
2/17/202110 minutes, 43 seconds
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Who should get the vaccine first?

It's a question that's on the lips of politicians, scientists and policy-makers right across the globe - who should get the COVID-19 vaccine first? Should it be the elderly and clinically vulnerable, healthcare professionals and other frontline workers, or another group entirely? We chat to Dr Alberto Giubilini, a philosopher at the Oxford Uehiro Centre for Practical Ethics, about why this decision is so ethically complicated. 
2/3/202111 minutes, 50 seconds
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Should we edit genes to make nicer people?

Is it possible to edit someone's genes before they are born to make them a nicer, kinder, more moral person? Not only that - but, importantly, should we do this? When it comes to gene editing for moral enhancement, there are many ethical points to consider. Join us as we chat to Tess Johnson, a Philosophy PhD student at the Oxford Uehiro Centre for Practical Ethics, about this very big question.
1/20/202113 minutes, 12 seconds
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Are video games good for my mental health?

Most of us have probably heard of video games being described as "addictive", but is there evidence of this? Are they damaging to our mental health, or could they actually have a positive impact on our metal wellbeing? In this episode of the Big Questions podcast we're booting up our consoles, and asking Prof Andrew Przybylski, Director of Research at the Oxford Internet Institute, all about his latest study (fans of Animal Crossing and Plants vs. Zombies - this one's for you!).
1/6/202111 minutes, 28 seconds
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Should I buy a real or a fake Christmas tree?

It's that time of year - the festive jumpers are going on, the lights are going up, and we're ready to decorate our Christmas trees. But when it comes to choosing your fir, what do you go for - real or fake? Perhaps you have a trusty old family-favourite that comes down from the attic each year? Or maybe going to choose a real tree gets you into the festive spirit? Either way, have you ever wondered which is best for the environment? In this episode, we're chatting to forest scientist Henry Hung about which trees are the greenest (not literally!). 
12/16/202013 minutes, 9 seconds
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How do I win Fantasy Football?

Did you know that the winner of the 2019/2020 Fantasy Premier League, beating over 7 million other players, was Dr Joshua Bull - a researcher at Oxford's Mathematical Institute? How did he win? Turns out that 'mathematical thinking' and a strategic approach, combined with "gut instinct and a healthy dose of good luck" might just be the answer! Could you be next year's winner? Join us as Joshua shares his tips!
12/2/202012 minutes, 14 seconds
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How is technology being used to track Black Lives Matter protestors?

We've probably all heard the phrase 'Big Brother is watching you' (a reference to the fictional character in George Orwell's dystopian novel '1984') - but are we really under constant surveillance? Is it actually possible to be a fully functioning member of modern society without being tracked by some sort of surveillance system? And how is technology being used to track protestors - such as those involved in the Black Lives Matter demonstrations? We catch up with Anjuli Shere, from Oxford's Department of Computer Science and Channel 4's show 'Hunted', to find out. Find out more on this topic with Simone Browne, Shoshana Zuboff and Ken Klippenstein.  
11/18/202015 minutes, 2 seconds
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Can celebrities save the pangolin?

'Influencers' are here like never before...log on to social media, and there will be someone there to tell you what to cook or what to wear...But what about when it comes to wildlife conservation? For instance, how much impact can a celebrity have when it comes to saving an endangered species? In this episode of the Oxford Sparks Big Questions Podcast, we're asking zoologist Alegria Olmedo "Can celebrities save the pangolin?"
11/4/202012 minutes, 40 seconds
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What does the 'R Rate' really mean?

We're back with a brand new series of the 'Oxford Sparks Big Questions Podcast'! And - in the Autumn of 2020 - where else could we start but with an episode answering a big question related to COVID-19? We're all used to hearing a lot of pandemic terminology now, but it can be difficult to get to grips with exactly what all these terms mean. For instance, what does the 'R Rate' really mean? We asked Emmanuelle Dankwa, a statistical epidemiologist from Oxford's Department of Statistics, to help us bust some myths! For a transcript of this episode, please go to: https://www.oxfordsparks.ox.ac.uk/content/what-does-r-rate-really-mean
10/21/202013 minutes, 35 seconds
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How do you measure pain?

We all feel pain differently. What to one person may be the worst pain in the world, might be a mild irritation to another person; but why? At the moment, we don’t have a thorough understanding of how pain is processed, meaning it is difficult to devise treatments for chronic pain. In this episode of the ‘Big Questions’ podcast, we are lucky enough to join Dr Andy Segerdahl – a neuroscientist at the Wellcome Centre for Integrative Neuroimaging (WIN) and the Nuffield Department of Clinical Neurosciences at the University of Oxford – for one of his experiments, where he is examining pain response (in a willing volunteer!) using an fMRI scanner. As he explains, if we can fully understand which parts of the brain and spinal cord are involved in pain response in a healthy individual, we can begin to understand how this response becomes dysfunctional.
7/15/202015 minutes, 16 seconds
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How are we using energy in lockdown?

Things have changed a lot over the past few months – including, for many of us, our daily routine. But how has this impacted our energy usage? In this week’s episode of the Big Questions podcast, we chat to Dr Philipp Grünewald from Oxford’s Environmental Change Institute about his ‘JoyMeter’ survey, which has given a fascinating insight into how our daily schedules, energy usage, and even our enjoyment of a cup of tea, have changed during lockdown.
7/1/202013 minutes, 58 seconds
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Why is Oxford's Botanic Garden Making Gin?

Established in 1621, the Oxford Botanic Garden was the first botanic garden in the UK. It has been - and remains – an invaluable resource for education, scientific research, and conservation. But recently it’s added another feather to its cap, teaming up with The Oxford Artisan Distillery to produce a ‘Physic Gin’. So what exactly is this gin, and what inspired Prof Simon Hiscock, Director of the Oxford Botanic Garden and Arboretum, to take on this new endeavour?
6/17/202013 minutes, 24 seconds
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How tricky is it to make a COVID-19 tracing app?

As we search for a way out of the global coronavirus crisis, there’s been plenty of discussion surrounding a potential COVID-19 tracing app. Many of us carry a mobile phone with us wherever we go, so it seems logical to use this pre-existing infrastructure in the transition towards a ‘new normal’. But how tricky is it to make such an app? What’s more, what challenges must be overcome for it to be an effective measure of preventing virus transmission? In this episode of the Big Questions podcast, Dr Grant Blank from the Oxford Internet Institute, who studies the social and cultural impact of the internet and new media, offers some thoughts.
5/20/202014 minutes, 55 seconds
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How do you fight malaria in the back of a van?

Just one mosquito bite is enough to infect someone with malaria. Tackling this serious – sometimes fatal – subtropical disease is a key priority for the World Health Organisation; but how can we move forward in the fight against it? Specifically, how could a small team of researchers, taking to the roads in a custom-built ‘Landrover Lab’, help in the fight against it? Listen to hear how Dr George Busby and his team took genetic sequencing techniques into the field, on a 7350km journey, to work alongside front-line researchers in Africa.
5/6/202014 minutes, 46 seconds
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What's in the Indian Ocean?

Much less is known about the Indian Ocean than either the Atlantic or Pacific. It's also the least protected. What secrets lie beneath the waves? What new species wait to be discovered…? Dr Paris Stefanoudis tells us all about the Nekton project, its past and planned missions, and the role it’s playing in helping us to find out “What’s in the Indian Ocean?”.
4/22/202012 minutes, 34 seconds
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Should we trust scientists?

We’re living in extraordinary times, where graphs and statistics are splashed across newspaper front pages, and misinformation is rife. How do we know which sources of information are reliable? How do scientific researchers go from having an idea to publishing their findings, and advising on policy? In this week’s episode of the ‘Big Questions’ podcast, we’re asking Brian Earp, a Research Fellow at the Oxford Uehiro Centre for Practical Ethics, ‘Should we trust scientists?’.
4/8/202016 minutes, 14 seconds
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How garlicky is your garlic?

When it comes to mass-producing food, it’s important to make sure the taste is consistent, and good! But how can we detect the taste of something without eating it ourselves? Prof Richard Compton and his team in the Department of Chemistry are experts in electrochemical sensors, and in this episode of the Big Questions podcast he tells us all about their new sensor…to detect the strength of GARLIC.
3/25/202010 minutes, 39 seconds
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What does my family want to know about coronavirus?

Coronavirus has been hitting the headlines since late 2019, and is now at the forefront of many people’s minds. We have a lot of questions, and it can be difficult to find answers. In this episode of the Big Questions podcast, Emily is asking her family what they would like to know about coronavirus, and Prof Christl Donnelly (an expert in modelling the spread of disease) is on-hand to provide some answers.
3/11/202016 minutes, 21 seconds
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Can we diagnose heart attacks faster?

With one person admitted to hospital every five minutes in the UK because of a heart attack, the ability to diagnose and treat them quickly is vital. In this episode of the ‘Big Questions’ podcast, find out how Dr Tingting Zhu is using a machine learning algorithm, trained on 15,000 ECGs, to diagnose heart attacks faster, potentially eliminating the need for time-consuming blood tests.
2/26/202013 minutes, 25 seconds
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Can data find me a date?

Looking for ‘The One’, or maybe just a date for Valentine’s Day? The dating scene has changed significantly over the past ten years, not least because of the increasing popularity of online dating websites and dating apps. In this special ‘Valentine’s’ edition of the Big Questions podcast, we’re asking Patrick Gildersleve from the Oxford Internet Institute - can data find me a date?
2/12/202012 minutes, 7 seconds
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Who was Henrietta Leavitt?

Much of post 1920s astronomy rests on her shoulders. Without her, we wouldn’t have a three-dimensional sky. Leavitt’s Law allowed us to measure distances in other galaxies as early as 1912. But how many people have ever heard of Henrietta Leavitt? We wanted to know about this ‘hidden woman’ of astronomy, so in this episode of the Big Questions podcast we ask Dr Becky Smethurst from the University of Oxford’s Department of Physics “Who was Henrietta Leavitt?”.
1/29/202016 minutes, 8 seconds
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Can we stop ageing?

We’re pretty obsessed with the concept of ageing. Ancient civilizations supposedly sought an ‘elixir of life’, and today many of us get hung up on finding a way to ‘younger looking skin’… But what’s the science behind ageing? What determines the life expectancy of a species and – time for the 'big question' – can we stop ageing? We ask Alison Woollard, Associate Professor of Biochemistry at the University of Oxford, just that - and even sneak a peek in her lab...
1/15/202014 minutes, 22 seconds
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Why do diets fail?

It's a new year (and a new decade!) and many of us will be looking to turn over a new leaf when it comes to diet and lifestyle. But - as anyone who's tried one will know - diets are VERY difficult to stick to. In this episode of the Big Questions podcast, we ask Professor Heidi de Wet from the University of Oxford's Department of Physiology, Anatomy and Genetics "Why do diets fail?". Don't worry - she also provides some great tips for a healthier lifestyle along the way!
1/1/202015 minutes, 50 seconds
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What's under Lapland?

We know it as the home of Father Christmas, but why is Lapland of interest to geologists? In this festive episode of the Big Questions podcast we ask Anna Bidgood from the University of Oxford's Department of Earth Sciences "What's under Lapland?". Join us as we find out why the minerals found in the region are important, and what it's like to be a field scientist in the frozen north...
12/11/201913 minutes, 52 seconds
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Where is my hoverboard?

According to the much-loved 'Back to the Future' franchise, we should all be zipping around on hoverboards by now. As we come to terms with our disappointment that they STILL haven't hit the shelves, Dr Clara Barker from Oxford University's Materials Science department discusses the technology that would be required to build one, and we learn all about superconductors along the way.
11/27/201913 minutes, 2 seconds
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How do you build a super sewer?

What do you do when a city outgrows its 150 year old sewer system? Build a super sewer of course! Join University of Oxford engineer Dr Brian Sheil as we go underground, and learn how his innovative sensors are revolutionising the Thames Tideway Tunnel Project – and the construction industry.
11/13/201912 minutes, 44 seconds
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Are bats superheroes or villains?

The Big Questions podcast is back with a new series, and we start with a special Halloween edition! Join University of Oxford evolutionary virologist Emilia Skirmuntt as we learn all about the weird and wonderful world of bats, and ask the question 'Are bats villains or superheroes?'
10/30/201911 minutes, 59 seconds
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Why are athletes using ketones?

It’s considered one of the hardest athletic challenges. 21 day-long stages covering around 3,500 kilometres (2,200 miles) - it’s the Tour De France. A Tour de France rider will burn enough calories during a six-hour mountain stage to fuel an average person's activity for two to four days. So how do these athletes compete day in, day out? On this episode of the Big Questions podcast we are asking the question: Why are athletes using ketones? This week we visited Kieran Clarke, Biochemist at the University of Oxford to find out…
6/19/201913 minutes, 30 seconds
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Why aren't we dead?

There is a whole world of things out there that want us dead – we are talking microscopic invaders that want to get inside our bodies and kill us. Lucky for us we have a secret weapon to keep us alive…ANTIBODIES In this episode we are taking a deep dive and looking at these teeny tiny antibodies and asking….why aren’t we dead?  To find out we met up with the Head of the Department for Statistics at the University of Oxford, Charlotte Deane…
6/5/201913 minutes, 26 seconds
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How big a deal is that picture of a black hole?

By now you have probably seen that picture of the BLACK HOLE! But we have some questions….in this episode of the Big Questions podcast we are asking: how big a deal is that picture of a black hole? To find out we visited the Department of Physics, University of Oxford, and met with Dr Becky Smethurst, astrophysics…
5/22/201918 minutes, 22 seconds
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Did volcanoes help kill off the dinosaurs?

Earth formed over 4.5 billion years ago. We should take a moment to realise how much history that is! Volcanoes are just one of Earth’s creations that have stood the test of time and on this Big Questions podcast we want to know: did volcanoes help kill off the dinosaurs? To find out the answer we visited the Department of Earth Sciences at The University of Oxford to visit Professor Tamsin Mather to find out! Listen here….
5/8/201912 minutes, 50 seconds
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What do our nerves sound like?

Our nerves don’t stop talking. They’re 24-7 communication systems for our bodies. But does all this cellular chitta-chatta actually make a noise? For 100’s of years, scientists have been trying to figure out how exactly our nervous system relays messages. Part of the secret may lie in a sound wave! On this episode of the Big Questions podcast we are asking: What do nerves sound like?  To find out we visited Shamit Shrivastava, Experimental Physicist at the University of Oxford…
4/24/201912 minutes, 54 seconds
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How do you turn a plastic bag into fuel?

There are a lot of plastic bags out there. Every year we get through 1 trillion plastic bags worldwide. Quick math, that means we are using 1 million bags per minute. But wouldn’t it be nice if we could turn this plastic into something useful? Like fuel for your car? On this episode of the Big Questions podcast, we are looking at the world of waste and asking: how do you turn a plastic bag into fuel? To find out we visited the Centre for Innovation and Enterprise (CIE) to meet Ben Williams, CEO for Sustainable Fuels, a new spin out from The University of Oxford, to find out...  
4/10/201913 minutes, 29 seconds
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What did Hollywood get right and wrong in these movies?

King Kong, PI, Eternal Sunshine of a Spotless Mind and Superman III. What do these 4 films have in common? SCIENCE! They caught attention of one film fan Edwin Davies. On this episode of the Big Questions podcast we are separating the fact and fiction and asking the question: What did Hollywood get right and wrong in these movies?
3/27/201920 minutes, 10 seconds
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Why do birds lay eggs?

Most new-born mammals and some reptiles emerge from their mothers through the usual channels. But baby birds are stuck cracking open eggshells – but why? In this week’s Oxford Sparks Big Questions podcast we are visiting Marie-Claire Koschowitz, evolutionary biologist and asking: Why do birds lay eggs? Warning: parents if you don’t want to have the birds and bees conversation you may want to listen to this one on your own ;-)
3/13/201911 minutes, 30 seconds
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Can computers predict crime?

You can’t turn on the TV or read a newspaper article without a daily reporting of crime. As technology and computer algorithms advance we want to know if there will be a computer model that could know us better than ourselves. In this episode of the Big Questions podcast we visited Seena Fazel, Professor of Forensic Psychology at the Department of Psychiatry, University of Oxford to ask the question: Can computers predict crime?
2/27/201914 minutes, 27 seconds
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Why should we cuddle?

Who doesn’t love a cuddle? Whether it is from a pet or a person they just make us feel good. But, would you believe wrapping your arms around someone else can actually improve your gut health? In this episode of the Oxford Sparks 'Big Questions' podcast we are looking at lemurs and asking: Why should we cuddle? To find out we went to the Department of Zoology at the University of Oxford to speak to Aura Raulo who is studying the importance of cuddling.
2/13/201913 minutes, 27 seconds
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Why does Uranus smell like farts?

Uranus, the seventh planet from the sun, has the poetic name of the Greek god of the heavens. In the English language, it is, unfortunately, the literal butt of every astronomy joke. And last year the new discovery about the seventh planet’s odour – or, more precisely, the chemical composition of its atmosphere – has not helped the comic element. In this week’s Big Questions podcast we visited Professor Patrick Irwin from the Atmospheric, Oceanic and Planetary Physics, from the University of Oxford to ask: Why does Uranus smell like farts?  
1/30/201913 minutes
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What happens in the field?

Field work. It sounds like a lot of fun! Scientists get to travel the world visiting exotic locations seeing and experiencing incredible things. But in reality they can find themselves outside the comforts of their lab with some interesting things happening to them! This podcast episode is a little different to our usual Big Question series, as we hear from three scientists who took to the stage as part of the Oxford Ideas Festival. In front of a live audience we asked them the Big Question: What happens in the field? Listen here to hear stories from Dr Amy Dickman, Dr Becky Smethurst and Dr Cedric Tan…
1/16/201920 minutes, 35 seconds
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Should I be a vegan?

If you have been in a supermarket recently you will have noticed it, all of a sudden all of the shelves have become more vegan friendly. With a New Year upon us and resolutions being made – is it time to take the plunge and say good bye to meat and dairy? In this episode of the Big Questions podcast we are asking: Should I be a vegan? To find out we visited Dr Christina Potter who is a health behaviours researcher working on the Livestock, Environment and People (LEAP) project.
1/2/201912 minutes, 52 seconds
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Can a machine pick a perfect Christmas gift?

It is that time a year again where our relationships are tested to find that perfect Christmas gift! Wouldn’t it be nice if there was an algorithm that could do it for you? In this episode of the Big Questions podcast we ask the question: Can a machine pick a perfect Christmas gift? To find out we went to the Department of Computer Science to speak to Senior Researcher Helena Webb, Research Associate Menisha Patel, PhD researchers William Seymour and PHD researcher, Ross Gales…
12/12/201815 minutes, 40 seconds
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Can you hack an aeroplane?

35 million flights will take off and land this year. Each flight is tracked on the ground by air traffic control and there’s technology on the plane. But what is stopping a hacker from sitting in front of their computer and disrupting the computer system? That is what a team of the University of Oxford are trying to work out. In this week’s Big Question podcast we are visiting Dr. Martin Strohmeier researcher in systems security in the Department of Computer Science asking: Can you hack an aeroplane?
11/28/201811 minutes, 57 seconds
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Why does my phone battery suck?

Most people use their phones every single day for communicating with others, using the Internet, playing games via apps. There’s nothing worse than looking down at your phone and realising the battery is running out of juice—or worse yet, that it’s already completely dead. One of the most common problems with smart phones is a quickly-draining battery. So why does our mobile phone battery suck? To find out we visited Dr David Howey, associated professor in the department of Engineering, University of Oxford to find out!
11/14/201814 minutes, 1 second
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How do you bake a cake in a microwave?

Bakers spend years perfecting their skill to make amazing cakes! But can you do it in minutes within a microwave? To find out we look into the science of baking and met up with Luke Jew, astronomer from the department of Oxford Physics, University of Oxford to find out...
10/31/201813 minutes, 7 seconds
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Where are all the Mangarahara cichlid hiding?

In the early 2000s, Brian Zimmerman and his team at London Zoo received a donation from a private fish-breeder of some Mangarahara cichlids. At the time, scientists hadn’t yet officially described the species. Not much was known about it, other than its provenance, the Mangarahara river in Madagascar. Little did the team know that within a decade they would be putting up a ‘wanted’ poster in a last-ditch attempt to save the species from extinction! In this episode of the Big Questions podcast we visited Brian Zimmerman and Diogo Veríssimo, to ask: Where are all the Mangarahara cichlid hiding?
10/17/201815 minutes, 19 seconds
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How do you grow rice faster?

3 billion people depend on rice for survival & owing to predicted population increases, land that provided enough rice to feed 27 people in 2010 will need to support 43 by 2050. In this week's podcast episode we ask: how do you grow rice faster? Currently over three billion people depend on rice for survival, and, owing to predicted population increases and a general trend towards urbanisation, land that provided enough rice to feed 27 people in 2010 will need to support 43 by 2050. In the hopes of meeting the food needs of billions of people around the world, scientists have taken a major step towards creating a 'supercharged' strain of rice! In this week’s Big Questions podcast we visited Jane Langdale, Professor of Plant Development at the University of Oxford, and is the current coordinator of the C4 Rice Project, to ask: How do you grow rice faster?
7/11/201811 minutes, 30 seconds
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Is there a faster way to diagnose Tuberculosis?

Tuberculosis is still one of the top ten causes of death worldwide, with 1.4 million people dying from TB in 2015. If your doctor suspects you have the disease it can take up to 6 weeks to get a diagnosis! Tuberculosis (TB) has influenced history. The disease was for centuries associated with poetic and artistic qualities in its sufferers, and was known as "the romantic disease". But in reality there is nothing romantic about the disease. Before drug therapy was available in 1946, nearly half of the people infected with tuberculosis died. Tuberculosis is still one of the top ten causes of death worldwide, with 1.4 million people dying from TB in 2015. If your doctor suspects you have the disease it can take up to 6 weeks to get a diagnosis! In this week’s Oxford Sparks Big Question podcast we visited Dr Philip Fowler, Senior Researcher at University of Oxford Using molecular simulation to predict antibiotic resistance and also runs @bashthebug to ask: Is there a faster way to diagnose Tuberculosis?
6/26/201813 minutes, 58 seconds
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How do you teach a robot social cues?

As robots are increasingly deployed in settings requiring social interaction we asked the Big Question: How do you teach a robot social cues? To find out we visited Shimon Whiteson, Associate Professor at the Department of Computer Science Robots already perform many traditionally human tasks, from vacuuming to surgery—and they could soon help care for the sick and elderly. But until they can convincingly mimic emotions, their caretaker value will be severely limited. In an effort to create “friendlier” machines, researchers are developing robotic helpers that can better read and react to social signals. In this episode of the Oxford Sparks Big Questions podcast we visited Shimon Whiteson, Associate Professor at the Department of Computer Science at The University of Oxford to ask: How do you teach a robot social cues?
6/19/201812 minutes, 20 seconds
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Can you stop Alzheimer’s before it even starts?

Alzheimer's, is a chronic neurodegenerative disease that usually starts slowly and worsens over time. In this podcast episode we ask: Can you stop Alzheimer's before it even starts? A diagnosis of Alzheimer’s is life changing for the person with the disease, as well as their family and friends. The changes don’t happen overnight. It starts with the small things and then it progresses. But what if there was a way of figuring out the early warning signs of slowing it down or preventing it? In this episode of The Big Questions podcast we visited Jennifer Lawson, Trials Manager from the Department of Psychiatry to ask: Can you stop Alzheimer’s before it even starts?
5/31/201810 minutes, 51 seconds
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What is antimatter?

What is antimatter? Antimatter was one of the most exciting physics discoveries of the 20th century, and has since been picked up by fiction writers such as Dan Brown. But what exactly is it? Antimatter has fuelled many a supernatural tale, but it's also fascinating all by itself. Many people think of it as an "out there" theoretical idea, unaware that it is actually being produced every day. What's more, research on antimatter is actually helping us to understand how the universe works! To find out more we visited Donal Hill, particle physicist from the University of Oxford Department of Physics to ask: What is antimatter? Listen here to find out…
5/17/201813 minutes
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Can you cure HIV?

HIV isn’t a death sentence anymore. People can live long lives with the virus in their body, as long as they have the right combination of drugs. But some researchers want to take the fight against HIV and AIDS even further... HIV (human immunodeficiency virus) is a virus that weakens the immune system and hinders the body’s ability to fight disease. Without treatment, HIV could lead to the potentially fatal diagnosis of AIDS (acquired immune deficiency syndrome). The AIDS epidemic began in the 1980s and millions of lives have been lost since it was first discovered. Over the decades, advances in technology and medical capabilities have brought more advanced HIV treatments. But some researchers are not satisfied with that. They want to take the fight against HIV and AIDS even further. In this episode of the Oxford Sparks Big Question podcast we ask the question: Can you cure HIV? To find out we visited Professor John Frater from the Nuffield Department of Medicine… Listen here to find out…
5/2/201815 minutes, 8 seconds
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What do water striders have in common with Game of Thrones?

On this episode of the Oxford Sparks Big Question’s podcast we visited Dr Jennifer Perry, evolutionary biologist and entomologist to ask: What do water striders have in common with Game of Thrones? Listen here to find out…. Game of Thrones, the world created by author George RR Martin, has gone from beloved book series to much watch box set. Murder, sex, dragons, incest and a battle for the throne! What more could you want from a TV series? Science of course! There just happens to be one tiny bug that embodies all of these complex relationships we are seeing played out in the show – it’s called a Water Strider. On this episode of the Oxford Sparks Big Question’s podcast we visited Dr Jennifer Perry, evolutionary biologist and entomologist to ask: What do water striders have in common with Game of Thrones? Listen here to find out…. *you don’t have to have watched Game of Thrones to understand this episode!
4/17/201813 minutes, 42 seconds
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How does the brain identify voices?

In this episode of The Big Questions podcast we joined the experiment to ask: How does he brain identify voices? To find out we interviewed MRI Physicist Stuart Clare and Neuro Scientist Holly Bridge at the Wellcome Centre for Integrative for Neuroimaging When your brain cells are dying, is it possible to make a robotic brain to replace them? When I look at a picture of my identical twin sister, Lily, do I process it differently to when I look at a picture of myself? These were just a couple of questions that were submitted from the general visitors to the ‘Brain Diaries’ exhibition at the Oxford University Museum of Natural History in 2017. As a part of the display they asked visitors for suggestions of experiments about the brain they could carry out within an MRI scanner. Over 700 people entered the competition and the winning question was streamed live on the Oxford Sparks Facebook channel. In the episode of The Big Questions podcast we were present at the live experiment to find out the answer: How does he brain identify voices? Listen here to find out… https://www.oxfordsparks.ox.ac.uk/content/how-does-brain-identify-voices
4/9/201810 minutes, 53 seconds
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How do you mend a broken heart?

In this episode of the Oxford Sparks Big Questions podcast we visited Cardiovascular Biologist, Nicola Smart, from the department of physiology, anatomy and genetics to ask: How do you mend a broken heart? lub-dub, lub-dub, lub-dub is the sound of your heart beating in your chest. This is how we know we are alive. But what happens if it stops? Of course, if there's doctors and nurses around they can get it started again - but does this mean your heart is truly fixed? In this episode of the Oxford Sparks Big Questions podcast we visited Cardiovascular Biologist, Nicola Smart, from the department of physiology, anatomy and genetics to ask: How do you mend a broken heart?
3/23/201813 minutes, 22 seconds
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How do you become an astronaut?

Millions dream of being an astronaut, but how many of us have what it takes? In this episode of the Oxford Sparks Big Question's podcast, we visit Merritt Moore, quantum physicist from The University of Oxford, to ask: How do you become an astronaut? How do you become an astronaut? Within the next few decades, humans could be leaving their footprints on the Red Planet! That's the plan, as NASA continues to prepare to expand human exploration in the solar system. But what we want to know is: How do you become an astronaut? To find out we visited Merritt Moore, quantum physicist from The University of Oxford, to ask: How do you become an astronaut?
3/13/201813 minutes, 10 seconds
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How did Mary Somerville get on the Scottish 10 Pound note?

In this episode of the Big Questions podcast we are asking: How did Mary Somerville get on the Scottish 10 Pound note? Who is Mary Somerville? If you immediately thought 'she was a scientist!' you would be right! But she is so much more than that! Somerville college right here in Oxford was named in her honour. In this episode of the Big Questions podcast we are asking: How did Mary Somerville get on the Scottish 10 Pound note? To find out we visited Brigitte Stenhouse who is doing her PhD at the Open University on the Mathematics of Mary Somerville.
3/13/201811 minutes, 45 seconds
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Does love have a scent?

In this episode of the Oxford Sparks Big Questions podcast we are looking at the science behind love at first smell and asking does love have a scent? Love is in the air - or is it? Companies are advertising that they can find you love through the power of scent! But are pheromones a chemical way to find your true love? Or is it just a myth? In this episode of the Oxford Sparks Big Questions podcast we are looking at the science behind love at first smell and asking does love have a scent? We visited Dr Tristram Wyatt, Senior Research Fellow, Department of Zoology at The University of Oxford to find out…
2/6/201813 minutes, 23 seconds
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How do you measure a Mars quake?

In this episode of the Big Questions podcast, we visited Dr Neil Bowles, Jane Hurley and Tristram Warren from the Atmospheric Oceanic & Planetary Physics Department to ask the question: how do you measure a Mars quake? When the ground shakes on Earth we call them earthquakes. Even weak ones can be detected by 'seismometers' and from listening carefully to them we can learn a lot about the makeup of the planet - that it has a solid core, molten mantle under a thin crust. But can we learn anything from listening out for quakes on Mars? This May 2018 the InSight lander will be launched and head to Mars, landing in November 2018 in the quest to hear Mars Quakes!
1/29/201813 minutes, 52 seconds
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What happens after a storm?

In our latest episode of the Big Questions podcast we visited Dr Peter Walton, a geography teacher turned fellow of the Environmental Change Institute, at the University of Oxford, to ask: What happens after a storm? Does this sound familiar? ‘This is definitely the coldest winter’, ‘we haven’t experienced strong winds like this before’, ‘what a deluge!’ It is easy to blame climate change for the latest bad weather conditions – but how do we really know? In our latest Oxford Sparks podcast where we ask the Big Questions to the brightest minds across the University of Oxford, we asked: What happens after a storm? We visited Dr Peter Walton a geography teacher turned fellow of the Environmental Change Institute, at the University of Oxford, to find out!
1/10/201810 minutes, 43 seconds
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Is vaping better than smoking?

As many of you set your new year’s resolution to quit smoking and start vaping, we thought we’d ask the question: Is vaping better than smoking? And could it help you quit? E-cigarettes are the new kid on the block. They’re getting lots of attention from many scientists across the world curious to see if this is the trick that’s needed to separate 1 billion people from cigarettes! Yes, 1 billion people smoke! When we first saw an e-cigarette, it felt like we had been transported in time - gone were the days where you light tobacco wrapped up in paper – now we had machines to deliver our nicotine addiction! As many of you set your new year’s resolution to quit smoking and start vaping, we thought we’d ask the question: Is vaping better than smoking? And could it help you quit? To find out we visited Jamie Hartmann-Boyce Senior Researcher (Health Behaviours) and Managing Editor for Cochrane Tobacco Addiction Group… and there’s a musical surprise.
1/9/201815 minutes, 11 seconds
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How do you survive the office Christmas party?

‘Tis the season to be merry, so it’s time for the annual Christmas party. For some employers it can be more fraught than fun! In this episode of the Oxford Sparks Big Questions podcast we ask: how do you survive the office Christmas party? Everyone has a story about an office Christmas party that got a bit out of hand. On this episode of the Oxford Sparks Big Questions podcast we are getting festive and asking – how do you survive the office Christmas party? We visited Professor Robin Dunbar, anthropologist and evolutionary psychologist University of Oxford.
1/9/201811 minutes, 57 seconds