Why do humans continually go to war? Are wars always started for profit motives? Scientists are divided on question of whether humans are innately peace-loving or aggressive.
Heather Whipps writes in LiveScience.com that scientists are studying Australopithecus afarensis, an early ancestor who lived five million years ago. He was small and furry and not strong enough to do much fighting, so scientists assume he was definitely peace-loving. He was mostly a vegetarian although, like today’s chimps, he dined on insects when he could get them. Researcher Robert Sussman says this doesn’t fit in with the stereotypical image of the “cave man” as a spear wielding hunter.