Europe

Ancient painted hand stencils on a cave wall for an article about Spanish cave art

Uranium dating confirms Spanish cave art is at least 40,800 years old

A calcite crust over a red disk at El Castillo cave in Spain confirmed what no prior method could prove: the painting beneath it is at least 40,800 years old. The 2012 C.E. uranium-thorium study transformed how scientists understand the origins of symbolic thought — and raised the possibility that Neanderthals, not just modern humans, were among the world’s first artists.