It's often said that our intellect and ability to create and use tools separates us from our animal brethren...but the truth might be a little more blurry. New finds suggest that some of the earliest tools predate humanity and show that language and tool usage may have emerged long before previously thought...
http://www.theatlantic.com/technology/archive/2013/12/researchers-discover-the-hot-new-technology-throwing-javelins/281976/
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