Neanderthals: BFFs and frenemies of modern humans

New research findings show that Neanderthals lived alongside modern humans for thousands of years – we were practically BFFs, or perhaps 'frenemies'. 

Far from wiping out Neanderthals overnight, modern humans co-existed with their shorter and stockier cousins for thousands of years, giving plenty of time for the two groups to share ideas – and even squeeze in a bit of time for sex.