Sentences with phrase «further brain expansion»

Once we got smart enough to develop tools and find a richer diet, a positive feedback effect may have kicked in, leading to further brain expansion.

Not exact matches

A new study of artifacts from a cave in Israel suggests that our ancestors began regularly using fire about 350,000 years ago — far enough back to have shaped our culture and behavior but too recent to explain our big brains or our expansion into cold climates.

The expansion of the human brain may have involved a snowball effect, in which initial mutations caused further mutations that enhanced the brain even more

This expansion may have involved a kind of snowball effect, in which initial mutations caused changes that were not only beneficial in themselves but also allowed subsequent mutations that enhanced the brain still further.