July 18, 2016 at 11:27AM on Facebook

The final nail (projectile point, whatever) in the coffin of the Clovis-first hypothesis? It’s now all but certain that the first Americans arrived from Asia or Beringia in boats thousands of years before the Clovis culture. And also therefore that the extinction of Pleistocene megafauna (mammoths, ground sloths, giant short-faced bears, etc.) did not immediately follow the arrival of human hunters.
16,000-Year-Old Tools Discovered in Texas, Among the Oldest Found in the West