"These folks doing the genetic marker tracking are doing great work. It is interesting to note that, if traces of hominid occupation of North America can be traced a far back a 35,000 years, This means that these early people traveled fast, far, and wide. Simply amazing. ""I expect that we'll eventually find that humans were stranded in South America during the Volcano Winter caused by the Toba explosion and were not re-united with the world's other humans until thousands of years later."
From my post #2.