Ask the Naked Scientists

Epizode

• How does a headache tablet know where it hurts? 29.05.2026 24min

  Does water boiled in a microwave oven taste different from kettle-heated water? How long does it take the body to absorb a drink of water? Does too much water cause a kidney problem? What are essential fatty acids? Why do farts linger longer in the shower? What's better for your body, hot water, cold water, or warm water? How does the body know to swallow a drink and breathe air? How does an aspirin know where it hurts? And how does the anus tell a fart from a shart? Like this podcast? Please help us by supporting the Naked Scientists
• Why does running water make us want to use the toilet? 22.05.2026 22min

  Why does running water make us want to go to the bathroom? What is IQ, and can you improve it? What is a Pica craving? Why isn't sperm damaged when it's frozen? Is there any evidence that links COVID vaccines to cancer rates? Is there a test to check whether honey is authentic or adulterated? What are hempcrete building materials? Why does it take so long to enrich uranium? What causes shingles? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Should we pay attention to the UFO files? 15.05.2026 23min

  Do the newly released UFO files matter? Why do people tend to live longer in the 21st century? Why do women live longer than men on average? What impact does excess rainfall have? Why might you lose phone signal when you turn on a microwave? Should we open our windows in high winds? Is climate change causing more CO2 to be released from the sea? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Can we travel forward and backwards in time? 08.05.2026 26min

  Is time a physical thing? How do trees know what season it is? What causes different-sized tides? Can cannibalism cause brain disease? Do all watches stop working at the same time? How do we identify different virus cases? How is hantavirus contracted? Can animals contract viruses by sniffing around contaminated material? And do meerkats carry hantavirus? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• How do vultures find their prey? 01.05.2026 23min

  Why are humans so sensitive to the smell of rain? Do statins cause dementia? What is the storage capacity of the human brain? How can I remember all the information I study? Do scientists believe in God? How do vultures find their prey? How can I stop or reverse grey hair? What does a cataract operation involve? What is diastolic blood pressure? Are MRI scans harmful to toddlers? And is Dr Chris worried that AI will replace him?! Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Why don't melting ice cubes make my drink overflow? 24.04.2026 21min

  How does polio cause disease? Why does ice added to a drink not make the glass overflow when the ice melts? What's the point of the appendix? Is old poison, past its expiry date, still toxic? What techniques built the pyramids? How do we treat hypotension? Why do our brains use a disproportionate amount of energy for their weight? Could a fan push a boat along if the wind dropped? And is a dry eye after a cataract operation normal? Dr Chris and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Do dogs dream? 17.04.2026 22min

  Do dogs dream? Can someone who was born blind dream? Do animals have souls? Do certain eye colours have more advantages than others in terms of sight? What is blind sight? What are growing pains? Is it unhealthy to sleep with closed windows? And what is some advice for sleepwalkers? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• What caused the craters on the Moon? 10.04.2026 22min

  How does the heat shield protect the Artemis II astronauts on their return to Earth? What caused the craters on the Moon? Can the materials in cooking pots cause poisoning? What is seasickness? Can space missions take place during periods of high solar activity? And what propels spacecraft? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• What colour is a mirror? 28.03.2026 21min

  Why some people can't say their Rs; why is perception of time so context dependent; what's the nutritional value of long life milk; what determines how tall we are; why do some mirrors make you look a strange shape; why to take care with magnesium supplements to avoid explosive diarrhoea; how can fish swap between fresh and salt water environments; and why doesn't the stomach digest itself? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Do we all see colours the same way? 13.03.2026 23min

  On this week's show, why dogs don't live as long as humans. Also, why do we feel cold when our skin is warm to the touch? Do we all see colours the same way? Do animals experience embarrassment? If photons head towards two small slits, do they only pass through one slit or both? Why does the Middle East have an abundance of oil? And why are our taste buds affected when we have a fever? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Can white skin transplanted to a black person change colour? 06.03.2026 22min

  This week Clarence Ford and Dr Chris discuss NASA's DART mission to defect an asteroid, why we can't tickle ourselves, whether lung capacity affects the heart, if white skin transplanted to a black person changes colour, why some people are more ticklish than others, how scientists are able to read ancient DNA codes, why the sea is salty, and what triggers seizures? Like this podcast? Please help us by supporting the Naked Scientists
• Why do we get a falling sensation as we drift off to sleep? 27.02.2026 19min

  This week, Dr Chris Smith and Sara Jayne Makwala King get to the bottom of IBS, why women living together often synchronise menstrual cycles, why we get a sudden falling sensation when dropping off to sleep sometimes, and if Earth suddenly stopped spinning, what would happen first? Also, are the faces that crop up in our dreams real people we've seen before, or has our brain created people that don't actually exist? Like this podcast? Please help us by supporting the Naked Scientists
• Is there an evolutionary advantage of golf? 20.02.2026 19min

  In this week's show, how scientists discover Russia's use of frog neurotoxin epibatidine to kill political opponent Alexei Navalny, why some people are more vulnerable to dental problems, why does a full bladder make me feel sick, how is gum disease linked to heart disease, where do the clouds surrounding Table Mountain go, and what is the evolutionary advantage of golf? Plus, can science and religion co-exist? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• What is foot-and-mouth disease? 13.02.2026 24min

  How did life on Earth begin? Why is glass clear when sand is opaque? What is foot-and-mouth disease? Why do some people's accents change when they emigrate? What is trigeminal neuralgia? What is decided before drug trials take place? What's the difference between colloidal silver and quantum silver? Is Lyme disease contagious? And are we gaining or losing mass on planet Earth? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Can the brain recover from alcohol misuse? 06.02.2026 22min

  Do animals enjoy views like we do? Why are some elephants born without tusks? Why do some people pass out on roller coasters? Is there a cure for dizziness? Can the brain recover if you stop drinking alcohol? Why is there a difference between the way that dogs and humans metabolise food? Did hallucinogens play a role in human evolution? Is a heart murmur a side effect of an overactive thyroid? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• What is an induced coma? 30.01.2026 21min

  What is consciousness? What is the Nipah virus? What is an induced coma? Is there an official scale for pain? Can you think yourself better? How can you make plasma? And how do you prevent a dog's pee from turning your lawn brown? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Which part of the brain is responsible for decisions? 23.01.2026 21min

  Why does a glass of water help settle a sore throat? What are the best ways to help heal a slipped disc? Which part of the brain helps us make decisions? What causes stuttering in speech? If a fly is travelling in a fast car, is it travelling at the same speed as the car? And at what age is our brain fully developed? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Which part of the brain is responsible for decisions? 23.01.2026 21min

  Why does a glass of water help settle a sore throat? What are the best ways to help heal a slipped disk? Which part of the brain helps us make decisions? What causes stuttering in speech? If a fly is travelling in a fast car, is it travelling at the same speed as the car? And at what age is our brain fully developed? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• Which part of the brain is responsible for decisions? 23.01.2026 21min

  Why does a glass of water help settle a sore throat? What are the best ways to help heal a slipped disk? Which part of the brain helps us make decisions? What causes stuttering in speech? If a fly is travelling in a fast car, is it travelling at the same speed as the car? And at what age is our brain fully developed? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists
• How do cell phones see the Northern Lights when we can't? 18.01.2026 20min

  Why does knocking your elbow unleash a distinctive "funny bone" jolt? Are we born with a sense of thirst? What are we seeing when we see things glow under ultraviolet? Why do our minds cling tightly to bad experiences? How do phones see the Northern Lights, even when we cannot? And do the planets in our solar system all move in the same direction? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists