Two theories of bipedalism

At the end of May, there was a news story doing the rounds about how bipedalism evolved in the trees and not, as has been traditionally thought, via knuckle-walking on the ground. Now, a new study says bipedalism evolved because it uses less energy than knuckle-walking.

What is an interested non-expert supposed to think? (Actually, for the record, as an interested non-expert, I didn't buy the first story at all.)

Anyway, I only mention this second story, because it included a funny photo of a chimpanzee on a treadmill:

Chimp on treadmill

This one will have the animal rights people doing their nuts.

Writer and photographer Richard Carter, FCD is the founder of the Friends of Charles Darwin. He lives in Hebden Bridge, West Yorkshire.WebsiteFacebookTwitterNewsletterBooks
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