New dating techniques have been used on an old archeological find to push back the date of the first human settlements in North America some eight centuries. Doesn't sound like too much when you're talking about an event that was at least 13,000 years ago, but you know scientists... always looking to get their name in the paper about something. Well, that, and the fact that such a push means the "new" old people used a culture different from the "old" old people.