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Bartering Orangutans
Can orangutans learn to deal with money? Astronomer Dennis Ashton tries counting all the stars in the Universe. Nasa launches a space satellite to measure space weather. Plus, why do some tunes stick in your head?
Presented by Gareth Mitchell.
Picture: Young Orangutan, Credit: Thinkstock
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大象传媒 World Service Archive
This programme was restored as part of the World Service archive project
