Huge crater discovered in Greenland

There was a very large iron meteorite found in Greenland. The Cape York meteorite.

I've always strongly questioned the "consensus" that early humans were responsible for the mass extinctions of the megafauna. Small bands of primitives could kill and eat only a fraction of the large animals that went extinct. I agree this could be the "missing" extinction impact.  But one must ask why humans were spared.  Maybe they were able to survive by hunting the smaller animals that did not go extinct.  I've read that most of the smaller animals like deer survived whatever killed off the mastadons etc.  I've always suspected that the impact destroyed the major food resources needed by the big animals while smaller creatures were able to forage on what remained.