Dating afghan men
So suggests new research that tracked changes in two genes thought to help regulate brain growth, changes that appeared well after the rise of modern humans 200,000 years ago.
"We, including scientists, have considered ourselves as sort of the pinnacle of evolution," noted lead researcher Bruce Lahn, a University of Chicago geneticist whose studies appear in Friday's edition of the journal Science.
"There's a sense we as humans have kind of peaked," agreed Greg Wray, director of Duke University's Center for Evolutionary Genomics.
In this second part of Kitfield’s interview, Dunford talks Turkey, Kurds, Daesh (ISIS) and whether the US will boost the number of troops stationed in Afghanistan.
BD: Just while you were meeting with your Asian counterparts in Singapore and Sydney, Australia, there were terrorist attacks claimed by the Islamic State of Iraq and Syria (ISIS) in London, Melbourne, and Kabul.
"A different way to look at is it's almost impossible for evolution not to happen." Still, the findings also are controversial, because it's far from clear what effect the genetic changes had or if they arose when Lahn's "molecular clock" suggests — at roughly the same time period as some cultural achievements, including written language and the development of cities.