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Uploaded on Apr 22, 2010
http://www.bbc.co.uk/science Michael Mosley has a close, and messy, encounter with an orangutan as he finds out about some of Charles Darwins lesser known work. Famous for the theory of evolution, Darwin also spent over 30 years of his life looking at the emotional expressions of both humans and animals. His research included visiting an orangutan in a zoo but, unlike Michael, it possibly didnt include being spat at.