Ron gets a no-prize with a grudge against Indians for bringing us news of a new theory that attempts to explain why most of the large mammals of the western hemisphere died out 13,000 years ago. Scientists claim to have discovered evidence of a very large extraterrestrial object impacting the earth at about this time, which they claim caused a massive ice cap covering most of North America to melt. The massive cold water runoff this created shifted major ocean currents, triggering the well-documented Younger Dryas cooling event, whose thousand-year effect offed the big mammals. Ta-da!

The theory is, of course, controversial, with the primary objection being the lack of a big hole somewhere to crawl around in.