Ask The Naked Scientists

What does the genetic fingerprint of Ozti, the 5300-year-old Alpine iceman, reveal? Why do bubbles in a Guinness go...

Can we grow a hamburger in a dish? What's the one meat that vegetarians can ethically eat? Do ants regard rival...

Why is amputation necessary in cases of gangrene? What is aspartame and can it cause Alzheimer's? What's the...

What is freezing rain, do cats control their owners, how do accents arise, why does hair go grey? What causes deja-vu?

Should wounds be left open or covered up? Why toenails - but not thumbnails - ingrow, what is hydatid disease?

How much water should you drink in a day? Can miscarriages be prevented? What's the point of flies?

Are cellphones safe? Why should cornflour make irradiated skin more comfortable? Why do dogs turn in circles before...

What is the best way to manage autism? Do we swap molecules when we touch each other? Can my koi recognise my voice?

Is there any evidence for acupuncture? Compared with coffee left to stand, why does freshly-brewed make a different...

Is there an injection for weight loss, and can pigeons tell each other apart?

Why do more eggs means less water in an egg boiler? Does a hip replacement shorten a leg? Where do beetles go in winter...

Why do electric clocks lose time, what's smaller than an atom, what is sickle cell disease, does ice stop a nose-...

This week, why does a bout of flu leave you with blocked ears? Can grapefruits be engineered to taste like meat? Why is...

After telling us how the bubonic plague bacterium, which wiped out half the population of Europe in the middle ages,...

Why do some things dissolve but others don't, what are the stains on the towels at the gym and how do astronauts...

Why do onions make you cry and will a frozen onion have the same tear-jerking effect? What medicinal qualities does...

Does cooking with gas taste better, why are yawns infectious, how does carbon dating work, what is spontaneous human...

Where does the energy come from that keeps electrons in orbit within an atom? Can cars and truck weigh themselves like...

Where and in what volume is mucus made in the body? Why do bums look darker that skin elsewhere on the body? How does...

What makes the eye's pupils change size? Does scratching a coin make a machine more likely to accept it? Why does...

NASA announce signs of running water on Mars and scientists turn skin cells into brain cells. Plus the answers to why...

This week - Will wounds heal quicker if licked by a dog?& Why does flying cause earaches?& How do gas masks...

Does jumping inside a plummeting lift prior to impact prevent a fatal fall? What causes echoes on phones? Are trees...

This Week, Chris Smith and Ben Valsler join Redi in the studio for an extended Ask the Naked Scientists!& We find...