Did we whack them all?

Yet another chapter in the Neanderthal extinction debate. It seems less likely that anatomically modern humans interbred with our Neanderthals, but we still don't know what did them after all? Did we drive them to extinction?

The technical cool part is the error free sequencing of mitonchondrial Neanderthal DNA. The DNA comparison to humans seems to indicate that we split around 660k years ago from Nearderthals. Some might say that maybe not all of us did.