50,000 generations of bacteria prove that evolution never stops

In a remarkable experiment that's been going on for nearly a quarter century, biologists have shown that lab-grown bacteria — even in a stable, unchanging world — will continue to evolve in a way that makes it increasingly good at reproducing. » 11/18/13 1:40pm 11/18/13 1:40pm

Gelada monkeys offer evidence that abortion is part of evolutionary…

The story begins with an insurrection, and ends with infanticide. A male gelada monkey, unsatisfied with his social standing, challenges the authority of a superior gelada. The payoff: a so-called "reproductive unit," comprising a dozen females, that will mate with him and him alone. If the usurper is victorious, he will … » 2/23/12 12:00pm 2/23/12 12:00pm