DNA from a Neanderthal bone fragment in Crimea, dated to around 45,900-45,300 years ago, reveals genetic links between European and Siberian Neanderthals and suggests a migration corridor along 55°N.
Geneticist David Reich explains how analyses made possible by technological advances show human history to be one of mixing, movement, and displacement.
The article details a study suggesting that rapid shifts in gene regulation, rather than changes in protein-coding genes, likely drove the evolution of human intelligence. Researchers identified two key regulatory "saltations" – sudden changes – unique to humans that impact areas like memory, learning, social behavior, and emotional depth.
In a recent study by scientists at UC San Francisco, human accelerated regions (HARs) have been identified as crucial to the rapid evolution of human brain complexity, distinguishing us from our closest evolutionary relatives, chimpanzees. These regions, evolving 10 times faster than the typical mammalian rate, enable the formation of intricate neural networks, which support advanced cognitive functions.
