Dark Clouds and Sunlight on Your Skin

17 October 2008
Presented by Chris Smith.

Why are some clouds dark? Why don't bees stick to their own honey? Why is UV light good for skin conditions, when we know it damages the skin? All these questions and more can be found in this week's Ask the Naked Scientists! Plus, why archaeologists think TB arose as a result of people coming together to live in early villages, and how meteorites lock away the secrets of the solar system.

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