Nestled in the nether regions of the nasal passage is a little-known organ that sees a lot of use in other animals but seems to be useless in humans.

Vestigial structures take many forms: organs, behaviors, and even biochemical processes. Their defining characteristic is they are structures that a species has retained, but no longer serve their ...

Ant colonies have evolved some surprising collective traits over the 150 million years or so that they have crawled the Earth. Fire ants link together to make frighteningly effective rafts, for ...