Archaeologists have found some of the first tools used on Earth, dating back 3 million years. The discovery was made in Africa, which is called the ''cradle of humankind.'' ...
Once they had thought the development of a large brain or the making and use of stone tools was the pivotal early evolutionary innovation setting human ancestors, the hominids, apart from the apes.
MORE: Change in landscape for early hominids may have led to the development of speech, new study finds Neanderthals are believed to have become extinct about 40,000 years ago, Krause said.