========== If you ask evolutionary biologists when did humans become humans, some of them will say that, well, at some point
we started standing on our feet, became biped and became
the masters of our environment. Others will say that because our brain
started growing much bigger, that we were able to have
much more complex cognitive processes. And others might argue
that it's because we developed language that allowed us to evolve as a species. Interestingly, those three
phenomena are all connected. We are not sure how or in which order, but they are all linked with the change of shape of a little bone
in the back of your neck that changed the angle
between our head and our body. That means we were able to stand upright but also for our brain
to evolve in the back and for our voice box t...