Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

Science has treated same-sex sexual behavior as an “evolutionary conundrum” because it (generally) doesn’t help animals to reproduce, thus ensuring that their genes get passed down and their species ...

Researchers from The Universities of Manchester and Birmingham have identified the exact nerve cells in the brain that drive ...

A new study has found that chemical additives in everyday plastic might be stopping – or, at best, interrupting – the reproductive habits of a shrimp-like species that is key to the marine food chain.