Our human lineage is not actually linear. In fact, it's more of a branching tree, telling the story of our origins in Africa and our migrations throug...

NEW YORK -- Scientists say they've found evidence that stone tips for spears were made much earlier than thought, maybe even created by an earlier anc...

We are a cognizant, intelligent, contemplating species, possibly the only such species in the universe. Even if we aren't, we should act as if we are that precious. Our purpose, then, should be to thrive and to be the universe's means of self-contemplation, to be the mind of the universe.

At long last, these creatures who roamed the Continent for hundreds of thousands of years only to become extinct 30,000 years ago under the onslaught of modern humans from Africa are getting a major upgrade by the scientific community.

By: Charles Choi, LiveScience Contributor Published: 03/14/2012 11:09 AM EDT on LiveScience Mysterious fossils of what may be a previously unknown...