Researchers have demonstrated that intensified environmental variability (EV) can promote the evolution of cooperation through simulation based on evolutionary game theory. This result offers a new ...

Tsukuba, Japan—Cooperation is fundamental to human societies. Building on the hypothesis that heightened environmental variability in Africa during the Middle Stone Age influenced behavioral evolution ...

A major climate simulation covering the last 2 million years is used alongside more than 3,000 fossils and archaeological records to explore how precipitation and temperature shifts shaped the ...

Fossils unearthed in Ethiopia are reshaping our view of human evolution. Instead of a straight march from ape-like ancestors to modern humans, researchers now see a tangled, branching tree with ...

Researchers at the University of Maine are theorizing that human beings may be in the midst of a major evolutionary shift—driven not by genes, but by culture. "Human evolution seems to be changing ...