North America occupied earlier than previously thought

That link is to an interesting article about radiocarbon dates that push human occupancy of North America back to 50,000 years ago. Yes, this is something that may only interest me, but there you have it. There's plenty of debate and conjecture about just when and how the Americas were settled by humans. One theory is that they crossed the Bering Strait land bridge before it was under water. Another posits that humans sailed along the coast of North America even earlier. Of course, most evidence for something like that would be under water due to rising sea levels. Anyways, the article is an interesting read.