This is intersting. I read about it in my newspaper this morning.
It seems that there was no savanna needed to make humans. And perhaps
our ancestor common with chimps was bipedal, but chimps retured to
"quadropedalism".
So what was the difference that made humans? Why was it better to
use hands for other things than walking?
I know a man who says that "man is the singing and dancing ape"!

- Hans