

Why? with Emma Kennedy
Podmasters
The podcast for curious minds. Every Wednesday, Emma Kennedy delves into the science and psychology of why we are the way we are.Emma is joined by leading experts and some of science's brightest minds to answer the big questions you never knew how to ask. Why do people join cults? Why do we need the moon? Why are we drawn to evil? Why do we have fetishes?Find out all of this and more on Why? from the makers of Oh God, What Now? and The Bunker .Follow us on social media:ThreadsInstagramBluesky
Episodes
Mentioned books

Sep 17, 2025 • 27min
Why do some people hate exercise?
Why do some people love the gym while others hate it? A new study suggests it might be about personality, not willpower. Dr Flaminia Ronca, researcher at the Institute of Sport, Exercise and Health at UCL, joins Emma Kennedy to find out if there’s a workout your brain is secretly wired to love or whether loathing spin class is perfectly normal!
Advertisers! Want to reach smart, engaged, influential people with money to spend? (Yes, they do exist). Some 3.5 MILLION people download and watch our podcasts every month – and they love our shows. Why not get YOUR brand in front of our influential listeners with podcast advertising? Contact ads@podmasters.co.uk to find out more
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
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Sep 10, 2025 • 31min
Why is sunscreen suddenly controversial?
For years, sunscreen was the dullest health advice around: slap it on, don’t burn, lower your cancer risk. Easy. But in the weird world of TikTok wellness hacks and alarmist headlines, SPF has been recast as something sinister. This week on Why, Emma Kennedy is joined by Brian Diffey, Emeritus Professor of Photobiology at the University of Newcastle, to unpack how sunscreen actually works and how a simple life-saving habit got tangled up in conspiracy and misinformation.
Advertisers! Want to reach smart, engaged, influential people with money to spend? (Yes, they do exist). Some 3.5 MILLION people download and watch our podcasts every month – and they love our shows. Why not get YOUR brand in front of our influential listeners with podcast advertising? Contact ads@podmasters.co.uk to find out more
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Dominic Delargy. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Sep 3, 2025 • 33min
Why can’t I pay attention to anything?
From phones to laptops to smartwatches, modern life is constantly pulling us in a dozen directions at the same time and it’s leaving us stressed, distracted, and less productive than ever before.
This week on Why, Emma Kennedy is joined by Professor Gloria Mark, Chancellor's professor in the Department of Informatics at University of California, Irvine and author of Attention Span, to uncover what’s really happening to our focus and if we can get it back.
Buy Attention Span: Finding Focus for a Fulfilling Life through our affiliate bookshop and you’ll help fund The Bunker by earning us a small commission for every sale. Bookshop.org’s fees help support independent bookshops too.
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Dominic Delargy. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Aug 27, 2025 • 35min
Why are antibiotics losing their powers?
What if the next health crisis isn’t a new virus, but the slow erosion of the medicine we’ve taken for granted? For nearly a century, antibiotics have been the quiet miracle behind modern medicine, making infections survivable and surgeries safe. But now superbugs are rising, resistance is spreading, and that invisible shield is cracking.
This week Emma Kennedy is joined by biologist Liam Shaw joins us to discuss his book The Dangerous Miracle, to explain the fascinating history of antibiotics and what happens when we push nature too far.
Buy Dangerous Miracle: A natural history of antibiotics – and how we burned through them through our affiliate bookshop and you’ll help fund The Bunker by earning us a small commission for every sale. Bookshop.org’s fees help support independent bookshops too.
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnson. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Aug 20, 2025 • 28min
Why are we obsessed with protein?
We’re back and we’ve got some questions. Protein has taken over the supermarket. Crisps, popcorn, cereal and even coffee now boast about their protein content. But do we actually need so much of it in our diet?
This week Emma Kennedy is joined by Dr Dan Baumgardt, GP and lecturer in neuroscience and physiology at the University of Bristol to sort the science from sales pitch and find out why we’re all so obsessed with protein.
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnson. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Aug 13, 2025 • 29min
Will we ever really understand evolution?
We’re back and we’ve got some questions. Evolution has shaped us into the odd-looking, brilliant creatures we are, but how exactly did it do it? Why did our genetics settle on five fingers? And why do scientists have a perfect explanation for testicles but are completely stumped by our pointy chins?
This week, Emma Kennedy is joined by Dr. Max Telford, Professor of Zoology and Comparative Anatomy at University College London and author of The Tree of Life: Solving Science's Greatest Puzzle, to help us wrap our heads around the wonderful world of evolution.
Buy The Tree of Life: Solving Science's Greatest Puzzle through our affiliate bookshop and you’ll help fund The Bunker by earning us a small commission for every sale. Bookshop.org’s fees help support independent bookshops too.
Advertisers! Want to reach smart, engaged, influential people with money to spend? (Yes, they do exist). Some 3.5 MILLION people download and watch our podcasts every month – and they love our shows. Why not get YOUR brand in front of our influential listeners with podcast advertising? Contact ads@podmasters.co.uk to find out more
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Aug 6, 2025 • 33min
What are microplastics doing to our bodies?
Microplastics are turning up everywhere; in our lungs, blood, even our brains. They’re tiny, toxic, and almost impossible to avoid. So what can we do about them? Today, Emma Kennedy speaks to Dr Antaya March and Prof Fay Couceiro from the University of Portsmouth to find out what this means for our health and the long term consequences of ignoring this tiny problem.
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Advertisers! Want to reach smart, engaged, influential people with money to spend? (Yes, they do exist). Some 3.5 MILLION people download and watch our podcasts every month – and they love our shows. Why not get YOUR brand in front of our influential listeners with podcast advertising? Contact ads@podmasters.co.uk to find out more
Learn more about your ad choices. Visit podcastchoices.com/adchoices

Jul 30, 2025 • 36min
How is Ozempic changing the world?
We’re back and we’ve got some questions. Weight-loss injections are reshaping more than waistlines. They’re changing the world we live in. Drugs like Ozempic were developed to treat diabetes, but now they’re transforming how we eat, fly, dress and maybe how we think about our impulses.
This week, Emma Kennedy is joined by Professor Giles Yeo, obesity researcher at Cambridge University and author of Why Calories Don’t Count: How we got the science of weight loss wrong, to help us wrap our heads around how these so-called “skinny jabs” are changing everything.
Buy Why Calories Don’t Count: How we got the science of weight loss wrong through our affiliate bookshop and you’ll help fund The Bunker by earning us a small commission for every sale. Bookshop.org’s fees help support independent bookshops too.
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnson. Edited by Dominic Delargy. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Jul 23, 2025 • 30min
Why do we fall for fake news?
We’re back and we’ve got some questions. How does fake news pull us in? From deepfakes to dodgy headlines, we’re constantly navigating a minefield of misinformation. It spreads faster than the truth, plays on our emotions, and can confirm what we want to believe.
This week, Emma Kennedy is joined by Dr. Gordon Pennycook, Associate Professor of Psychology at Cornell University and Dr. David Rand, Professor of Brain and Cognitive Sciences at MIT, to find out why it is so hard to combat fake news?
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnson. Edited by Dominic Delargy. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky Learn more about your ad choices. Visit podcastchoices.com/adchoices

Jul 16, 2025 • 38min
Why do we laugh?
We’re back and we’ve got some questions. What is laughter? A joyful cackle, a nervous snort, a full-body wheeze. It’s how we react when life gets silly, or sometimes painful, or uncomfortable. We laugh to connect, to disarm and, sometimes, to survive.
This week, Emma Kennedy is joined by Laura Lexx, professional comedian with an actual masters in stand up comedy and host of Lexx Education, to help us decode the giggle. Why do we laugh? Is it really contagious?
WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnson. Edited by Dominic Delargy. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.
Instagram | X | Threads | Bluesky
Learn more about your ad choices. Visit podcastchoices.com/adchoices