After cold winters, invertebrates such as honeybees and paper wasps seem to disappear and then suddenly return in large ...

A recent study from the University of Cologne has revealed that microscopic soil worms called nematodes form surprisingly ...

Amazon mollies don't need a man, and never will. A new study finds they can purge and repair genetic mutations that would otherwise plague a self-cloning species.

The tiny Amazon molly (Poecilia formosa) has always fascinated researchers because, according to the rules of evolution, it shouldn't have survived as a species, let alone thrive as a species for over ...

The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.

Have you ever heard two or more women say they’re on the same cycle? This is a common claim among women who live together, for example in a family or as housemates. This idea that people menstruate, ...