人类悖论：我们为何拥有大脑袋并直立行走？

Why do we have big brains? Or walk on two legs? Biological anthropologist and broadcaster Alice Roberts talks human exceptionalism with Michael Marshall Michael Marshall: What‘s the big idea in this latest part of your journey into the human past? Alice Roberts: When I was working at the University of Bristol, something happened that was really important to how I think about humans. When I was a young surgeon, teaching anatomy to students, we built a dissection room in the vet school. I was roped in to teach there and remember looking at a lamb’s heart. …