It seems that the past is still an evolving mystery with many secrets yet to reveal. Just when archaeologists think that they have our ancient history nailed, new discoveries occur which undermine all previously-held theories and leave researchers scratching their heads once more.

A new paper, published in the latest PLoS ONE, reveals amazing details about a collection of stone-tipped spears which were unearthed recently at a Stone Age site in Gademotta, Ethiopia, that could mean re-writing ancient history and the human time-line forever. It is thought that the spears date to 280,000 years ago, predating the earliest known human fossils by an staggering 85,000 years.
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