Ask the Naked Scientists
How many organs could you donate and remain alive? How many planet Earths could fit inside the Sun? How high is a giraffe's blood pressure? Why is the sea blue? To find out, Ask The Naked Scientists!
For a short time, I forgot who I was. What happened?

Why does La Nina cause more rainfall in South Africa? How can we keep our skin moist without buying products? Is it possible to be averse to iron in your diet? What causes hot flushes during the menopause? What could cause a potential iron taste in my mouth? Like this podcast? Please help us by supporting the Naked Scientists
Are women really more nurturing?

It's another jam-packed episode of Ask the Naked Scientist, illuminating listener questions - in all their usual, rich variety - with fascinating scientific explanations. What do we know about the latest interstellar objects to pass through our Solar System? Is having a great memory all upside? Why does eating pineapple hurt the inside of your mouth? Do waves really come in sets of seven? Does silver have antibiotic properties? Is there a limit to the number of pop songs that can be written? Like this podcast? Please help us by supporting the Naked Scientists
How is it possible to have 2 different eye colours?

In this episode of Ask the Naked Scientist: is it possible to teleport atoms? Does garlic repel mosquitoes? What is vaginal thrush? Like this podcast? Please help us by supporting the Naked Scientists
Can spicy food make your ear itch?

In today's episode of Ask! Dr Chris answers: why do some people attract more mosquitoes than others? Is there a link between sweating and sour tastes? What causes nasal polyps to form in the nose? Is Covid still around? Like this podcast? Please help us by supporting the Naked Scientists
Why do my wife's eyes light up when she sees me?

In this episode of Ask, if the universe is expanding, what's it expanding into? What's the relationship between descended testes and the chance of having children? Why does more urine come out when I stand rather than sit on the loo? How do surgeons join the cut ends of a colon together? At what age is it suitable to start taking creatine supplements? Why do I wake up in the middle of the night? Like this podcast? Please help us by supporting the Naked Scientists
Why do we dislike the sound of our own voices?

On Ask! the Naked Scientist this week: What led to the 'leopard spots' found on Mars? What is the purpose of finger and toe nails? How do bone conduction headphones work? Why do non-magnetic metals sometimes interact with magnetic objects? What role did our teeth play in our evolution? What's the cause of my unintended weight loss? Could astronauts create an environment for life on Mars? What's wrong with a pear shape? Like this podcast? Please help us by supporting the Naked Scientists
How can you control your phobias?

Is it dangerous to have floaters in your eye? Can you power a lamp with your mouth? Are nations in the global north more innovative than nations in the global south? How can you control your phobias? How do leap years come about? Dr Chris Smith and Relebogile Mabotja have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Why does sex make you sleepy?

Is the flipping of Earth's magnetic field a concern? Why might half-filled ice cube trays freeze faster? Why does sex make you sleepy? Why might you get an 'electric shock' from moving your head? Is nicotine addictive? Why does scratching an itch feel so good? Why do we have different blood groups? What are statins? Could we ever see the dark side of the moon? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Are there fragments of insects in chocolate?

Dr Chris answers listener questions including: do men and women have an equal chance of getting sports injuries? What health benefits can a sugar free diet bring? Why does my sock shift around my foot at night? How should we navigate testosterone levels in women's sport? How can we treat hypertrophic cardiomyopathy? Is 'biowater' a marketing gimmick? Like this podcast? Please help us by supporting the Naked Scientists
Why is it so important to finish a course of antibiotics?

Dr Chris is back to answer listener questions. Why do cat's eyes reflect bright colours? What are the short, high pitched ringing noises that can sometimes be heard? What causes Bell's palsy? Will botox help keep my eyelid up? Like this podcast? Please help us by supporting the Naked Scientists
Do animals feel fear?

Do animals feel fear the same way that we do? Do diet supplements boost your immune systems? Can using phones and headphones change the shape of your body? Why don't birds get electrocuted on pylons? Is the northern hemisphere more 'innovative' than the south? Dr Chris Smith and Relebogile Mabotja have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Will our universe keep on growing?

Dr Chris takes on more listener questions. Including: is Chinese medicine separate from Western medicine? Why do we sometimes cry in response to feelings of sadness and joy? Why do I have a blotch in my vision after looking directly at a light source? Why do kids cry when they get injured, but adults less so? What happens if I scratch a mosquito bite? What is the relationship between science and religion. Like this podcast? Please help us by supporting the Naked Scientists
Why do adults take longer to wake up than babies?

The questions keep coming for Dr Chris. This week they include: have scientists got their hands on the oldest ice ever studied? Does putting the air conditioning on too high or low make you ill? What factors contribute to chronic mental illness? How do you reduce puffiness under the eyes? Can cold weather make healed operation sites sore again? Like this podcast? Please help us by supporting the Naked Scientists
Why do medicines get discontinued?

In this episode of Ask! Dr Chris is asked: what is ivermectin? Are sodium ion batteries a rival to lithium? Is the Earth spinning slightly faster? Why do we warn against using phones around petrol stations? Like this podcast? Please help us by supporting the Naked Scientists
Is leukaemia genetic?

Do we have another comet visiting from outside the solar system? What is Oumuamua? Is the Ring of Fire amping up in activity? Is leukaemia genetic? Does exposure to certain chemicals increase your risk of cancer? Why are early health screenings so important? How do you measure the risk of certain health treatments? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Why does cold water take your breath away?

Why does cold water take your breath away? And why is it cold when you leave the cold water? What smells does an ant produce? Is there a psychological aspect to cramp? Are there any new asthma treatments in the pipeline? Are people getting vaccinated against cancer? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Why can't you tickle yourself?

Dr Chris answers listener questions including: what is the Higgs boson? How should I change my lifestyle to prevent diabetes? Why can you pass on yawns? Why does nerve pain/sciatica get worse when we're tired? Like this podcast? Please help us by supporting the Naked Scientists
Naked Scientists SOS

Cambridge University have informed us that, for cost cutting reasons, they intend to make Dr Chris Smith redundant. Naturally, this jeopardises the Naked Scientists programme, which is produced under his role. He will also lose his medical job. We regard this as a terrible decision and we intend to protest. Please listen to this short podcast to hear how you can help. Together we hope we can turn around this terrible decision... Like this podcast? Please help us by supporting the Naked Scientists
Why does bleach claim to kill 99.9% of bacteria?

Chris Smith answers listener science questions. They include, is it worth getting the flu vaccine? Is COVID still around? Is it possible to manufacture a car that runs on air? Why does the hair on our head keep growing, but not on our arms and legs? Is it good to finish a shower with a cold burst? Why are marathon runners thin? Like this podcast? Please help us by supporting the Naked Scientists
Would a compass work on the Moon?

Dr Chris with more answers to listener science questions: why was the discovery of the Higgs boson worthy of a Nobel Prize? Are birth rates falling around the world? How do we prevent HPV? Like this podcast? Please help us by supporting the Naked Scientists
Can a person be cloned?

Dr Chris answers listener questions including, how effective is the flu shot? Is there anything doctors don't want their patients to know? Do our eyes stay the same size through our lives? Could working in a dusty cement environment lead to health problems? When someone has dementia, how long will they live? Will doctors prescribe remedies purely to induce a placebo effect? Like this podcast? Please help us by supporting the Naked Scientists
When did life start evolving sex?

Dr Chris answers questions on CapeTalk, including: how often should we wash our clothes? Is there a relationship between the Earth's gravity and magnetic field? Are the magnetic poles moving? Is there a distinction between North and South? Why don't adult teeth grow back like children's teeth? Can we reconcile science and spirituality? Why does my sister's car attract insects? What is the quickest way to lose weight in a short period of time? Is it true that our eyeballs stay the same size throughout our life? Like this podcast? Please help us by supporting the Naked Scientists
What determines the speed of your internet?

Why is February only 28 days long? Is there a link between red meat, testosterone, and male violence? Is there a 'best' LLM? Can macular degeneration cause you to go blind? What do we know about the big bang? What determines the speed of your internet? Does an autoimmune system attack random parts of the body? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Should dogs sleep inside the house?

Ask! The Naked Scientist covers questions including, are we humans the universe's consciousness? Is the presence of dimethyl sulphide on an exoplanet a sure sign of life? Have scientists been able to establish where the Garden of Eden is? If I decide not to breastfeed, what happens to the milk I produce? Can I benefit from the nutrients? Like this podcast? Please help us by supporting the Naked Scientists
Are gravity and magnetism related?

In this week's Ask!, Dr Chris explains what we know about deja vu (have we had this one before?) Also, what might have been behind the major power outages in Spain, and what exactly was the Carrington Event? What causes the differences between summer and winter here on Earth? Like this podcast? Please help us by supporting the Naked Scientists
Does the shingles vaccine reduce risk of dementia?

Are there signs of life on another planet? Could a shingles vaccine prevent dementia? Do artificial sweeteners increase our appetite? How is obesity measured? Could there ever be a dementia vaccine? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Are girls better at maths than boys?

In Ask! the Naked Scientist, Dr Chris answers medical enquiries such as: why a pacemaker may cause some discomfort. Why might you get a migraine if you oversleep? And, is pain in the abdomen a sign of kidney failure? Like this podcast? Please help us by supporting the Naked Scientists
Are seed oils unhealthy?

In this week's Ask the Naked Scientist, Chris Smith tells us if we are seeing an increase in cancer numbers. Also, what are the underlying causes of colon cancer, and what treatments are available? Does alcohol aid sleep or disrupt it? Are seed oils unhealthy? Are mosquitos more likely to come for you when you wear a certain deodorant? Is paraffin carcinogenic? Like this podcast? Please help us by supporting the Naked Scientists
Is my microwave disrupting my Wi-Fi?

In this episode of Ask the Naked Scientist: does miso ferment differently in space? How can I improve my memory? Could receiving hepatitis A, tetanus, and typhoid vaccinations, in combination, cause chronic fatigue? Why does food go bad, and are food packet instructions accurate? What is brain plasticity, and how do we train it? What is mindfulness? Is my diabetes causing a strange smell in my urine? Like this podcast? Please help us by supporting the Naked Scientists
Does food taste different on an aeroplane?

Why do we have different blood groups? What drives the libido? Do you get drunk faster on an aeroplane? How long does an artificial heart valve last? Does food taste different on an aeroplane? Should you take multivitamins? Is there an actual physical end to space? Are there any benefits to copper or brass bangles? Do older people sleep less than younger people? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Can aspirin help prevent cancer?

In this episode of Ask! Dr Chris answers questions including: what are the minerals in mineral water? Is it safe to drink water from plastic bottles? Is glass safe to drink from? How do people perform sword swallowing? What are biodegradable plastics made of? What is metformin, and is it effective? Like this podcast? Please help us by supporting the Naked Scientists
Do edibles hit you harder than smoking a joint?

On Ask! the Naked Scientist, Can you keep sparkling water fizzy for longer? Are magnesium tablets good for us? Why do we crave certain foods? How do breathalysers work? Like this podcast? Please help us by supporting the Naked Scientists
Can one black hole swallow another?

Is everywhere at the centre of the universe? How long do sweeteners stay in the digestive system, and what are the best alternatives? Can one black hole swallow another? Does Vitamin C help you fight flu? Why is science so hard to reproduce? Which animal only lives for one day? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Why is a dog's nose always wet?

Dr Chris answers science questions from listeners to TalkRadio 702, including; How does one improve short term memory, especially following a brain injury? Can retinal microchip implants cure blindess? What are the health impacts of artificial sweeteners? Like this podcast? Please help us by supporting the Naked Scientists
Is AI polluting medical literature?

Dr Chris answers the usual spectrum of science questions from listeners to CapeTalk, including; are sweeteners bad for our cardiovascular health? If a mother has hypoglycemia while pregnant, what happens to the baby? Why did I have cravings during my wife's pregnancy? How does science track dangerous asteroids headed for Earth? Like this podcast? Please help us by supporting the Naked Scientists
Could a falling bullet injure you?

Do atoms carry memory of information? What happens when dopamine circuits are interrupted? Why might you hiccup when you shave? Why do both kidneys fail when they're separate? Could a falling bullet injure you? Is it important to be de-wormed? Dr Chris Smith and Relebogile Mabotja have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
Why do dogs age faster than humans?

In this episode of Ask! Dr Chris tells us what causes humiditiy in the air. Why are carbonated drinks bad for your teeth? Does the Naked Scientist know more than AI? Why does hair on our heads grow faster than on other parts of our bodies? Does Earth's magnetic field affect satellite transmissions? Like this podcast? Please help us by supporting the Naked Scientists
Why are humans the only species with advanced intelligence?

Dr Chris answers more listener questions, including: How do sunflowers follow the sun? How does the body determine when you're passing wind or something more solid? Why are mosquitos attracted to some people more than others? Why are some people more intelligent than others? Why are humans the only species with advanced intelligence? How intelligent is an octopus? Like this podcast? Please help us by supporting the Naked Scientists
How do plants know which way is up?

How can you use sticks to calculate the circumference of the Earth? Can exfoliators remove your fingerprints? How do plants know which way is up? What dictates the pattern of a cat's stripes? What are hiccups? Can mosquitoes see you? Dr Chris Smith and Dan Corder have all the answers... Like this podcast? Please help us by supporting the Naked Scientists
What causes ulcers?

Why do ants drown themselves? Could we power cars with electrolytes? What causes ulcers? Do metal wrist rings actually reduce pain? Should you take probiotics on an ongoing basis? What are duodenal ulcers? Can brain tumours cause diabetes? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists