Between 3,000 and 4,000 years ago, the oldest human civilizations emerged; since then, the human race has lived in complete peace for around 268 years. And according to the book “What Every Person Should Know About War,” as many as 1 billion people may have died as a direct result of war (Free Press, 2003)
It is obvious that violence is not a new phenomenon, but is it a natural characteristic of humanity? Have we become more violent as a species?
The solution, it seems, isn’t straightforward. A 2014 study found that chimpanzees, one of our closest surviving ape relatives, frequently engaged in fatal conflict in their societies (Pan troglodytes).