This story appears in the June 2011 issue of National Geographic magazine. Every now and then the dawn of civilization ... the first structure human beings put together that was bigger and more ...

This story appears in the February 2017 issue of National Geographic magazine ... dating to near the dawn of civilization. University of Pennsylvania biomolecular archaeologist Patrick McGovern ...

A shorter version of this story appears in the September 2016 issue of National Geographic magazine ... Our sensory organs attract us to them. As humans came out of Africa, they developed these ...

(See “DNA Revolution,” in the August 2016 issue of National Geographic.) No technology remotely as powerful has existed before for the manipulation of the human genome. Compare CRISPR and IVF.

Five years ago I spent a few days with National Geographic Fellow Paul Salopek, a writer who is walking around the world, retracing the journey begun when modern humans first left Africa.