As anyone familiar with Thor's hammer Mjolnir knows, sometimes the line between tool and weapon can be mighty thin. So when researchers unearthed a collection of smooth round stones at the Cave of Hearths in South Africa's Makapan Valley nearly 30 years ago, they were a bit puzzled. Were they tools or weapons? The prevailing theory has been the former, but new research provides evidence that the rocks were more likely projectiles than pounders.
.. Continue Reading Ancient stones were less like tools, more like deadly baseballsCategory: Science
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from Gizmag http://ift.tt/2bOHZ30
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