<p>This week Razib talks to Dan Crouch about what we know about the genetics of the variation shape and features. <a href= "https://www.pnas.org/content/115/4/E676.short">https://www.pnas.org/content/115/4/E676.short</a></p>

American Downfall: Cultural evolution, Peter Turchin, and the return of history

Where did we come from?  One of humanity's most basic questions, the answer is fascinating.  Weaving together insights from the fields of genetics, archaeology, linguistics, and paleoanthropology, hosts Spencer Wells and Razib Khan take us on a grand tour of human history.  Scientific storytelling at its best.