[Grisly evidence of Neanderthal cannibalism uncovered in a Belgian cave]It's not clear which hominid species used the Azraq tools. Some 250,000 years later, they've uncovered direct evidence: a scattering of stone tools still bearing traces of the creatures they were used to kill. "It’s the definitive evidence that these tools were used in this way." It seemed that the hominids, whoever they were, used each tool for one butchering episode, then cast it aside — almost as if they were using disposable knives. Even if just a fraction of them still contain residue, the results would dramatically increase what scientists know about how ancient humans used their tools — and on what.

Source: Washington Post August 09, 2016 12:00 UTC