Humans have spent more than 90 per cent of their time on earth existing in groups as hunter-gatherers and these basic instincts live on in all of us. If we’re to understand who we are today, we should start by getting a glimpse of who we were back then. One way we can do that is by comparing our behaviour to that of the chimpanzees. We share a common ancestor, and more than 98 per cent of our DNA, with these animals.
