Biologists are closing in on a puzzle that seems to turn classic evolutionary logic inside out, yet may be so common that it ...

Microbes often display cooperative behavior in which individual cells put in work and sacrifice resources to collectively ...

Ever since Charles Darwin published his landmark theory of how species evolve, biologists have been fascinated with the intricate mechanisms that make evolution possible. Can mechanisms responsible ...

The rate of evolution of population mean fitness informs how selection acting in contemporary populations can counteract environmental change and genetic degradation (mutation, gene flow, drift, ...

A novel genetic model suggests that the ancestors of modern humans came from two distinct populations that split and reconnected during our evolutionary history. When you purchase through links on our ...