Dark Skies, Meteors and 3D Vision

20 November 2009
Presented by Dave Ansell.

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How can you measure how dark a place is? When do meteor showers occur and how can we see them? How do 'magic eye' paintings work? We reveal the answers to these mysteries in this week's show. We also find out whether the earth breathes, why car wheels appear to move backwards, and how DNA can narrow criminals down to a specific location. Plus, we investigate where all the hazelnuts have gone!

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