IFLScience - We Have Questions — Podcast

Where Is The Human Heart Located? 22.06.2026 40min

New to anatomy? Locating your heart is a good start. Thing is, many people when asked will be pointing somewhere in the region of the left side of their body. It’s an easy mistake to make, not least because when we go to the doctor, that’s where they stick the stethoscope to have a listen. For the most part, it’s actually in the dead center, but with a lean. There are several good reasons for this, but a few conditions can mean your heart and its apex can shift around slightly. To find out where the heart is and how it got there, we sat down with Professor of Anatomy and Director of the Clinical Anatomy Learning Centre at Lancaster University, Adam Taylor. Turns out your ticker goes on quite a journey to wind up where it is.--- Like what you heard? Get 25% off All Access annual memberships with code SCI25* and start funding independent science journalism today. *Terms & Conditions: 25% OFF PROMO CODE: SCI25 offer for 1 billing period of an All Access Subscription: Annual paid subscription. New users only. Offer subject to change or cancellation at any time. Subscription auto-renews at full amount unless cancelled. You can cancel at any time. Membership paid subscriptions are only available in Canada, the United States (excluding Puerto Rico and US territories), the United Kingdom, and Australia. Our standard terms & conditions apply.

Are There Plants That Can Photosynthesize By Moonlight? 25.05.2026 36min

Imagine having a job that’s dependent on sunny weather. As a resident of England, I'd be pretty much done for. There are, however, hard workers on this planet that rustle up energy for the rest of the food chain to enjoy day in, day out. Yes, I'm talking about plants. A little thing called photosynthesis enables them to essentially “eat the Sun,” creating food from sunlight, come rain or shine, but what about at night? Are there any plants that can photosynthesize by the light of the Moon? As Head of Living Collection Support at London’s Royal Botanic Gardens, Kew, Thomas Freeth told us, plants have found all sorts of ways to overcome the changing nature of night and day. Like what you heard? Get 25% off All Access annual memberships with code SCI25* and start funding independent science journalism today. *Terms & Conditions: 25% OFF PROMO CODE: SCI25 offer for 1 billing period of an All Access Subscription: Annual paid subscription. New users only. Offer subject to change or cancellation at any time. Subscription auto-renews at full amount unless cancelled. You can cancel at any time. Membership paid subscriptions are only available in Canada, the United States (excluding Puerto Rico and US territories), the United Kingdom, and Australia. Our standard terms & conditions apply.

Can You Learn To Roll Your Rs? | IFLScience We Have Questions 20.04.2026 35min

My name is Laura, and I have a confession to make: I cannot roll my Rs. Now, as a native speaker of English, you might not think this would majorly impact my life. But I’ve also been a student of Spanish since the age of 12, and the rolled R sound? Well, it comes up a lot.After all these years, I’d basically written off my chances of learning to produce this elusive sound, but a chance conversation fanned the flames of curiosity once again. So, I spoke to Dr Helen Nuttall, Senior Lecturer in Cognitive Neuroscience and head of the Neuroscience of Speech and Action Lab at Lancaster University, to talk all things speech production – and just maybe, keep my dreams of Spanish mastery alive.

Why Is Modern Life So Exhausting? How Metrics Kill The Thrill Of Winning 02.04.2026 51min

Modern life is exhausting. If you’re not behind on your emails, then there’s the endless calls that could’ve been an email. Reminders that you haven’t reached this quota, or that element X of your job is slipping behind on its KPIs or rankings. It feels as if the ways we have to lose are endless in a world obsessed with metrics, and yet have you noticed that keeping score is so much fun in games? To understand why point scoring in life can be so draining versus scoring wins in games, I sat down with C Thi Nguyen, philosophy professor at the University of Utah and author of The Score: How To Stop Playing Someone Else’s Game. We dive into how the gamification of life has fundamentally captured our value systems, turning personal life choices into numerical data, and how to return to what’s truly meaningful over what’s easily measured. Join us as we explore all of this and more in this special bumper episode of We Have Questions.

Which Animals Have The Worst Table Manners? 23.03.2026 25min

Imagine yourself in a restaurant like no other: at the table beside you, two owls are on a date. There’s an anteater dining solo over in the corner, and a family of leeches sitting around a table just behind you. There’s a lot on the menu, but some of the dining etiquette might just put you off your food. This is the imaginary scenario we put to Chester Zoo’s Assistant Manager for Visitor Engagement, Ashleigh Marshall, when we invited her to discuss: Which animal has the worst table manners? Of course, animals have no need for etiquette, and they have all evolved these feeding strategies for a reason, but indulge us as we get a bit silver service about it all. There’s some seriously questionable eating going on in the animal kingdom.

What Do Other Worlds Smell Like? 23.02.2026 27min

IFLScience visited the Space: Could Life Exist Beyond Earth exhibition at the Natural History Museum, London, recently and we were curious to come across opportunities to take in the scents of asteroid Bennu, Mars, and even Saturn’s moon Titan. We understand that space smells, in an abstract way, we’ve even covered it before, but being able to get an actual whiff sparked many questions. Who created these smells, based on what, and how?  Enter Marina Barcenilla, astrobiologist and fragrance designer – and now major exhibition contributor – with her own artisan perfumery AromAtom, where she uses chemistry to create the smells of cosmic environments from the surfaces of planets to distant nebulae. So, we asked Barcenilla: How does one become a perfumer for the stars?

How Can Swimming For 37 Hours Help Tackle Ocean Plastic? 26.01.2026 23min

In 2022, a new world record was set in the waters off Grand Cayman in the western Caribbean Sea. I, a once avid collector of the Guinness World Records annual album, was most excited by the prospect, but ask environmentalist Oly Rush about it, and he’d sooner talk to you about plastic. You see, this wasn’t just any swim. This was a 36-hour-and-59-minute test of endurance to raise awareness of one of the greatest plights currently threatening marine species. The Grand Swim, as it would become known in a subsequent documentary about the grueling achievement, details what led Rush and Project Planet Earth to embark on such a perilous adventure. We, however, needed more deets on what wildlife you faceplant along the way. You can listen to this episode and subscribe to the podcast on all your favorite podcast apps: Apple Podcasts, Spotify, Podbean, Amazon Music, and more. This interview first appeared in Issue 37 of our digital magazine CURIOUS.

How Did Frogs Become A Pregnancy Test For Humans? 22.12.2025 26min

People were finding out they were pregnant via frogs until the 1960s. We all know that many of the tools in human life have been inspired by nature’s creations, but how often do you stop and really think about where these products come from? A new gallery at the Natural History Museum (NHM) in London is encouraging visitors to think more about their impact on the planet, as well as showcasing the inspiring work that demonstrates that however doom and gloom the news might be, hope is not lost. Among its many intriguing displays, we stumbled upon something curious: a frog pregnancy test. We had questions and needed to know more about this item, and we were surprised to find these frogs had a lot to say about women’s access to healthcare in the not-so-distant past. Here’s what we learned from Dr Isabel Davis, Research Leader in Collections and Culture at the NHM.This interview first appeared in Issue 36 of our digital magazine CURIOUS.

Can Sheep Livers Predict The Future? 24.11.2025 23min

Is it possible to predict the future by slicing open a farm animal and peering inside its liver? Scientists of the 21st century would surely be skeptical about approaching this question, but for the curious minds of ancient times, it was a tried and tested method for looking ahead and foreseeing what the gods had in store for you, your family, or your world. Known today as liver divination, this mysterious art was mastered by the ancient Assyrians and Babylonians, two mighty civilizations that flourished in Mesopotamia and carved their names into the bedrock of history. We spoke to Dr Selena Wisnom, author of The Library of Ancient Wisdom: Mesopotamia and the Making of History, who believes liver divination is a surprisingly insightful window into this world and the emergence of science. After all, it did manage to predict the election of Trump…

Burying Scientists Alive in the Snow 20.10.2025 33min

Polar Bears International (PBI) is serious about protecting bears, and in the pursuit of reliable data have gone to some extremes in the past. From burying scientists alive out in the snow to novel collar-camera setups that have enabled them to predict when polar bear moms and their new cubs are going to emerge from their dens. In an era of “drill, baby, drill,” now is a tougher time for polar bears than ever before. An essential step towards getting them the protection they require centers around demystifying their denning habits and what young bears need to survive, so we caught up with Dr Louise Archer, PBI’s Postdoctoral Research Fellow at the University of Toronto Scarborough, to find out what she’s been working on with a team in Svalbard, Norway.

Can Transplants Change Your Personality? 22.09.2025 20min

There’s a strange phenomenon reported among some recipients of organ transplants whereby people report altered memories, tastes, and personality changes. A particularly curious example included a woman who, having never much liked chicken nuggets, found herself compelled to eat them after receiving an organ from a man who had nuggets on his person when he died. Similarly perplexing changes in taste have also been reported among the recipients of bone marrow transplants, from loving gherkins to switching from white to red wine. This is something the UK-based stem cell charity Anthony Nolan knows a thing or two about. We spoke to their senior medical officer Dr Tania Dexter to find out more about what these transplants entail, how they've changed people, and why we think it happens. This interview previously featured in the March 2025 issue of CURIOUS, IFLScience's e-magazine. Check out the full issue to explore: Can We Really Trust Our Memories? Is Robotic Surgery The Future? And The Floating Mountains Of Zhangjiajie. https://www.iflscience.com/can-we-really-trust-our-memories-find-out-more-in-issue-32-of-curious-out-now-78264

Do Humans Have Pheromones? 25.08.2025 38min

Humans smell, there’s no denying it, but are some of those smells sending out chemical signals we aren’t consciously aware of? Are we, like ants, giving off pheromones? We spoke to Dr Tristram Wyatt, Senior Research Fellow in the Department of Biology at the University of Oxford, to find out.

Why Are Yawns Contagious? 21.07.2025 38min

It’s perhaps one of the greatest injustices of human bodily functions that the yawn has become so stigmatized in social settings. Crack one out and you’ll likely receive accusations of being bored or rude. It seems ironic, really, because the science of yawning tells us that, if anything, it’s a sign you’re trying harder to pay attention. That’s what we discovered when we sat down with Dr Andrew Gallup, Teaching Professor of Behavioral Biology at Johns Hopkins University and a bit of an expert in yawning. We wanted to find out why this open-mouthed action seems to be so incredibly catching, and discovered along the way that there’s a hell of a lot going on when we yawn.

Can We Preserve A Human Brain For Upload (And Why Aren't Transplants An Option)? 26.06.2025 53min

When we talk about death, we often say things along the lines of “it's a fact of life,” but the view can be very different when you’re facing the real and imminent prospect of no longer existing. Given the chance, can we be so sure that we wouldn’t try anything for a little more time? According to neuroscientist Dr Ariel Zeleznikow-Johnston, most of the general public would like 10 years more life than they’re statistically likely to get when asked “how long do you want to live?”, and it seems the hunger for more doesn’t diminish as time goes by. So, what if there was a way that we could postpone the seemingly inevitable by capturing the essence of who a person was, and storing it until future technologies enable us to bring them back? If we found a way to lock in someone’s way of thinking, their memories, and all the parts that make them unique, could we postpone death indefinitely? And why is it nobody’s tried just popping someone’s brain in another body? Join us as we explore all of this and more in this special bumper episode of We Have Questions.

Why Does Snow Sometimes Look Blue? 23.06.2025 19min

Snow is beautiful, but also powerful and destructive – and, if we’re honest, a bit confusing. For something made entirely of water, it can come in many forms: light and fluffy, sticky and heavy, shaped like a perfect snowflake, or falling in needle-like flecks. Its consistency changes a lot, but so does its color, which got us wondering: why does snow sometimes look blue? To find out, we reached out to Dr Andrew Schwartz at the UC Berkeley Central Sierra Snow Lab in California. As no strangers to snow, and we were delighted to learn that yes, their research sometimes does involve just frolicking in the stuff.

Why Don’t Animals Have To Brush Their Teeth? 26.05.2025 19min

Wake up? Brush your teeth. Going to bed? Brush your teeth. The dental routine of being a human can be a bit monotonous, but it’s an important step towards maintaining a happy mouth. It can be slightly baffling, then, to spot a photo of a bonobo with a seemingly perfect grin. How are wild animals getting away with it as we dutifully march off to our next dental hygienist appointment? Why don’t animals have to brush their teeth? It's a question that led us to the office of Peter Kertesz, who, as well as seeing human patients, is Dental Consultant to ZSL London Zoo and numerous other wildlife establishments around the world. A quick glance at his website shows Kertesz tending to the teeth of everything from elephants to tigers and dolphins with the help of dental nurse Monika Mazurkiewicz. We sat down with Kertesz to find out more about what it’s really like doing dentistry on non-human species, and why their days aren’t bookended by scrubbing their mouth bones.

What Happens To Eyes During The Mummification Process? 18.04.2025 28min

The mummification process is perhaps one of the most talked about aspects of Ancient Egyptian life. It highlights the morbid curiosity shared by those of us alive at a time when funerary practices have gone in a different direction. It’s also a skewed view, offering us insights into the death rituals of only the ancient very rich. The complex process of mummification is one we’re still trying to understand, not least because trying to step into the mindset of people living thousands of years ago is tricky when you’re burdened with the cultural norms of the 21st century. We know a bit about what they did to their skin, we know a bit about what they did to their organs, but that got us wondering – what happened to the eyes? We sat down with Egyptologist Dr Campbell Price, Curator of Egypt and Sudan at the Manchester Museum, UK, and author of Brief Histories: Ancient Egypt, to find out. And I must say, I wasn’t expecting the onions.

How Do You Rediscover A “Lost” Species? 24.03.2025 32min

DNA analysis confirmed in 2023 that a trapdoor spider lost to science had been rediscovered in the Portuguese village it was named after following a 92-year disappearance. Fagilde’s trapdoor spider (Nemesia berlandi) was first described in 1931 before apparently dropping out of existence – but all that changed when an expedition team happened to look under just the right rock. It marked the 12th “most wanted” lost species to be rediscovered since Re:wild’s Search for Lost Species launched in 2017, which got us wondering: how on Earth does such an epic mission unfold? Fagilde’s trapdoor spider was rediscovered by an expedition team led by the Global Center for Species Survival at the Indianapolis Zoo, where Sérgio Henriques is the resident Invertebrate Conservation Coordinator. We caught up with Henriques to find out just how much work goes into tracking down a missing spider.

Why Do Humans Play Games? 24.02.2025 38min

Stick two humans in an enclosed space with nothing to do, and before long, someone is likely to suggest a game of I Spy. Kids are so hot for smartphone games that it inspired its own meme format, and while certain generations might like to tell you this compulsion is a new thing – the fact is, humans have been playing games for thousands of years. It’s believed that gaming actually predates language, begging the question: why do humans play games? We spoke to Kelly Clancy, a neuroscientist and author of Playing With Reality: How Games Shape Our World, to find out.

How Do You Begin Searching For Alien Life? 20.01.2025 20min

From the brain-exploding Martians of Mars Attacks! to the wonderful diversity of Men In Black’s extraterrestrial entourage, the possibility of alien life is a concept that has captured the imagination of our entire planet. Most of us only get to explore it at the movies – but for some scientists, the search for alien earths is at the core of their career. One such scientist is Professor Lisa Kaltenegger, an astronomer who quite literally wrote the book on Alien Earths. That was why we were so excited to catch up with her at CURIOUS Live to find out what the search for life elsewhere in the universe actually entails, and how we even know what to be on the lookout for.

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