The Mysterious Downfall of the Neandertals
The standard theories of why Neandertals disappeared 28,000 years ago don’t hold up, so scientists are looking in new directions. The assimilation/interbreeding theory should’ve yielded some DNA evidence, but there is none. The replacement/war theory isn’t as cut and dried as it could be, since modern humans lived in the same territories as Neandertals for 15,000 years. Climate change? Sure, the earth was cooling at the time, but Neandertals had lived through ice ages before.
But the isotope data reveal that far from progressing steadily from mild to frigid, the climate became increasingly unstable heading into the last glacial maximum, swinging severely and abruptly. With that flux came profound ecological change: forests gave way to treeless grassland; reindeer replaced certain kinds of rhinoceroses. So rapid were these oscillations that over the course of an individual’s lifetime, all the plants and animals that a person had grown up with could vanish and be replaced with unfamiliar flora and fauna. And then, just as quickly, the environment could change back again.
Scientists are looking into the idea that Neandertals just weren’t as adaptable as modern humans, and over time lost out in the competition for resources in a changing world. Link -via Metafilter







