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Ask the Naked Scientists

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Dr Chris Smith

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!

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!

#719

Why should you cook at different temperatures in fan ovens?

Dr Chris takes on the final batch of questions of 2024 on CapeTalk. Why does sound cause me pain? What's the difference between white and brown vinegar? Does radioactivity harm inorganic matter? Is there a cure for anosmia (inability to smell)?What's outside our universe? Do we pass out on rollercoasters? How can we recognise our own baby's cry so well? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

20 Dec 2024

23 MINS

23:34

20 Dec 2024

#718

What colour should I paint my garage roof?

Chris Smith answers CapeTalk listeners' questions. Including, do wind turbines affect the temperature of the ground? What is the cause of protein build up in my eye? Can we predict how much we might shrink as we age? And does microwaving food affect its nutritional content? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

06 Dec 2024

18 MINS

18:14

06 Dec 2024

#717

Why does toothpaste contain fluoride?

Dr Chris Smith takes on listener questions on South Africa's CapeTalk. Why is there a delay between live TV and radio? Do wind turbines warm the air at ground level? Do we need to decommission the ISS? What causes genital warts? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

29 Nov 2024

21 MINS

21:23

29 Nov 2024

#716

Why is sunlight so important for the body?

Why are we called The Naked Scientists? Why should you get sunlight in the morning? Why does bright light make you sneeze? Does luck have a pattern? Is there really such thing as bad luck? Do people who don't get sunlight have more health problems? Did our skin colour change because of agricultural reasons? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

22 Nov 2024

18 MINS

18:05

22 Nov 2024

#715

Has it been a strange year for weather?

Dr Chris Smith answers questions from the listeners of CapeTalk. Including, why are pregnant women told to take folic acid? What causes ears to itch? Why is vomit yellow? Is there a relationship between organs of the body and areas of the skin? How effective is carbon dating? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

15 Nov 2024

18 MINS

18:54

15 Nov 2024

#714

Why do athletes spit on the ground?

Dr Chris and Clarence take on another selection of topics from across the scientific spectrum: Who were the victims of the Mount Vesuvius eruption? How does one get rid of ringworm? What are the effects of a low heart rate? If our internal body temperature is 37 degrees, why do we feel warm when it's 35 degrees outside? What is an eating disorder? Can an element in the periodic table be changed into another? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

08 Nov 2024

22 MINS

22:39

08 Nov 2024

#713

What should you do if a lift cable snaps?

Do animals lower their mating standards when drunk? Why do different farts make different noises? What should you do if your lift cable snaps? Were there two Earths at one point? Where do mosquitoes go during the day? Is tinnitus always a ringing sound? Is Teflon safe to use? Is there such thing as a universal frame of reference? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

01 Nov 2024

21 MINS

21:56

01 Nov 2024

#712

Do other animals see colour?

In this episode of Ask! The Naked Scientist, Dr Chris explains how our eyesight changes as we age, what the difference is between a brown and white egg shell, and the growing threat of antimicrobial resistance... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

25 Oct 2024

19 MINS

19:03

25 Oct 2024

#711

Are ambidextrous people more intelligent?

Listener science questions from South Africa answered by Dr Chris this time include: Do you urinate more liquid than the alcohol you consume? Why do dark skinned people get pigmentation underneath their armpits and between their thighs? What are the latest developments in helping restore vision to blind people? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

18 Oct 2024

17 MINS

17:29

18 Oct 2024

#710

Why do we have car headlights on during the day?

Dr Chris answers listener questions. Including, is air made up of the same proportion of stuff everywhere on Earth? What is earwax? Where is it produced and for what reason? How does time work at the North Pole? Why do strong perfumes cause sinus congestion? Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

11 Oct 2024

18 MINS

18:39

11 Oct 2024

#709

What is the best way to get rid of hiccups?

Can you bring someone back from the dead? Can a special diet help flexibility in older people? What is the best way to get rid of hiccups? Are hovercrafts safe? Why is yawning contagious? Does hot water sound different to cold water? Are there tardigrades on the ISS? Dr Chris Smith and Zain Johnson have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

04 Oct 2024

19 MINS

19:44

04 Oct 2024

#708

Why do fairground rides get worse as we age?

In a break from the usual format, the producers of The Naked Scientists take over from Clarence Ford to ask Dr Chris Smith some of your burning scientific questions. How does intuition work? Can you transplant a pancreas? Could we mine our second Moon? Why do lights flicker in our peripheral vision? Can one testicle still let you reproduce? Why do we dislike fairground rides as we age? Do we know what causes tinnitus? All will be revealed... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

27 Sep 2024

29 MINS

29:14

27 Sep 2024

#707

Should you wash every day?

Should you wash every day? Does washing your clothes damage them? Should you have a washcloth just for your face? Why does moving air make the temperature go down? Dr Chris Smith and Relebojile Mabotja have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

20 Sep 2024

15 MINS

15:31

20 Sep 2024

#706

Are more male babies born after a war?

Why do some people struggle to read? Are more male babies born after a war? Are some people allergic to hot skin? Why do some men's breasts swell up? Why do we use different frequencies for different broadcasts? Why do traffic lights go red when you're in a hurry? Dr Chris Smith and Relebogile Mabotja have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

13 Sep 2024

17 MINS

17:14

13 Sep 2024

#705

Can someone's heart keep beating after death?

Why do some people grind their teeth? Can someone's heart keeping beating when they're dead? How does the brain interpret words? How do we know how long something has been dead for? Dr Chris Smith and Relebojile Mabotja have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

06 Sep 2024

14 MINS

14:37

06 Sep 2024

#704

How do bones heal themselves?

How much do wildfires contribute to carbon release? How do bones heal themselves? Why do weeds seem to grow faster than other plants? Why do some animals float, but others sink? Why do ducks like spinach? How did we evolve different blood types? Why do some people's temperature go down when they're feeling ill? How many of our metals come from space? Why do snails come out in the rain? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

30 Aug 2024

18 MINS

18:11

30 Aug 2024

#703

What should we know about monkeypox?

What is monkeypox, and how can we tackle it? Why can't you walk through walls if atoms are mostly empty space? If X-Rays are harmful, why are microwaves and infrared not harmful? What are the benefits of the Large Hadrin Collider? Does taking Vitamin C harm your immune response? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

23 Aug 2024

22 MINS

22:13

23 Aug 2024

#702

Will we ever run out of helium?

Will we ever run out of helium? Will any planets in the solar system get knocked out of orbit? What causes ovulation pain? Is it wise to pop a zit? Why are two astronauts stuck in space? Have we re-invented lost inventions? Dr Chris Smith and Sara-Jayne Makwala King have all the answers... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

16 Aug 2024

17 MINS

17:50

16 Aug 2024

#701

How many cigarettes does it take to get hooked?

This week, Dr Chris and Relebongile find out how dietary salt affects the body, how loneliness and loss of a loved one can cause ill-health, what a blind person "sees" in their mind's eye, how broken fingers heal, how many cigarettes does it take to get hooked, and why does alcohol withdrawal cause shaking and tremors... Like this podcast? Please help us by [supporting the Naked Scientists] (https://www.thenakedscientists.com/donate) ... Read more

12 Aug 2024

16 MINS

16:56

12 Aug 2024