Comment by cfcef

It's always 'climate change'. Dozens of megafauna disappear? 'climate change'. Whole tribes with fortifications suddenly disappear? 'climate change'. Wholesale population replacement? 'climate change'. It's our age's "peoples don't migrate, pots do". It's gotten to the point that when I read about the latest population genetics result show introgression or replacement and they invoke 'climate change', I no longer know if it's a case where it could be climate change or just the usual total refusal to speculate about pre-historic warfare and predation.