Matter: Crossing From Asia, the First Americans Rushed Into the Unknown Three new genetic analyses lend detail, and mystery, to the arrival of prehistoric humans in the Western Hemisphere. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Skin cancer BREAKTHROUGH: New vaccine 100 PERCENT effective in beating melanomaThey Defied Trump on Climate Change. Now, It’s Their Moment of Truth.These 3 Hurricane Misconceptions Can Be Dangerous. Scientists Want to Clear Them Up.Branded Rockets and Astronauts on Cereal Boxes. NASA Chief Asks, ‘Is It Possible?’Beauty or Beast? Iceland Quarrels Over an Invasive PlantMatter: Seeking Human Generosity’s Origins in an Ape’s Gift to Another Ape