xpccx writes: "There's an article over at CNN about the possibility that early man hunted large animals ( like mammoths ) into extinction. "New work by American and Australian researchers is adding weight to the theory, while undercutting the notion that climate change and not human influence was the cause."" Update: 06/14 03:32 PM by H : This is touched on in Guns, Germs and Steel, which I highly recommend. This has been the going theory with many (most?) historians as to why the megafauna in Australia, the Americas all disappeared within a couple thousand years of the appearance of humans. Considering they had survived countless millenia before our arrival, I'm inclined to think that the two events might just kinda be linked.