Gravity may explain why Neanderthals failed to adopt advanced weaponry

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Spear-throwing tools called atlatls allow humans to launch projectiles over great distances, but Neanderthals apparently never used them – and an experiment involving a 9-metre-tall platform may explain why


An ancient spear-throwing tool enabled prehistoric hunters to boost the distance they could launch a feathered projectile – but the unexpected negative effects of gravity on the tool may explain why it was never adopted by Neanderthals and some Homo sapiens groups.


The spear-throwing tool – which is known as an atlatl – is a handheld stick with a groove at the end for holding a projectile. It acts as a lever to amplify the projectile-flinging momentum that can be achieved by the human arm.

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