Do the origins of civilization on Earth reach back significantly farther than we have realized? Discovery reports:
Remains of the oldest known stone-tipped throwing spears, described in a new paper, are so ancient that they actually predate the earliest known fossils for our species by 85,000 years.
There are a couple possible implications, and both are mind-blowing. The first is that our species could be much older than previously thought, which would forever change the existing human family tree.
The second, and more likely at this point, is that a predecessor species to ours was extremely crafty and clever, making sophisticated tools long before Homo sapiens emerged.
The new paper, published in the latest PLoS ONE, focuses on the newly identified stone-tipped spears, which date to 280,000 years ago. They were found at an Ethiopian Stone Age site known as Gademotta.