The history of humanity in the Americas is an ongoing point of curiosity. If we started out in Africa as is generally believed, spreading into Eurasia would have been fairly straightforward. Australia is basically the opposite situation, being so remote that arrival has to be by sea. But with the Americas, there is the tantalizing Bering land bridge and a proximity to Europe by sea that makes multiple "discoveries" at least theoretically possible well before Columbus. There are more than a few open questions, but … [Read more...] about Science Corner: The First SoCal Artisans