Naked Science Question and Answer and Polonium Poisoning

03 December 2006

Dr Chris, Dr Dave and Dr Phil answer all your questions on science, technology and medicine, including why spiders don't run out of silk, what is the universe expanding into, what a flame looks like in space, and what happens when the brain is cut off from a supply of oxygen. We also talk to Dr Mark Peplow from Chemistry World about polonium 210, how much was needed to kill former Russian spy Alexander Litvinenko, and where the perpetrators could have acquired it. Sticking with nasty substances, Derek Thorne and Dave Ansell make a mess with milk and vinegar in the name of Kitchen Science.

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