Spiders, Wasps and Evolution

28 August 2009
Presented by Dave Ansell.

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How do wasps reproduce? Do all spiders bite you? Why have some animals lasted many years without evolving? We take on these questions on this week's show as well as find out how helicopters fly, explain why kettles go silent before boiling, reveal how far radio signals can travel and discover how to get a boiled egg into a bottle!

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