Evolution seems to follow a script more often than expected. Researchers found that distantly related butterflies and moths ...

A yellow band across a wing might look like a simple flourish. In the South American rainforest, it can mean survival. Across butterflies and a day-flying moth that split from one another tens of ...

For ages, wall lizards coexisted in three distinct color types, each with its own strategy for survival. Now, a powerful ...

In Lake Malawi, Africa, fish known as cichlids have been evolving astonishingly fast—the lake hosts at least 800 species of them. Researchers who sequenced the genomes of these fish found that ...

Only the truest of crabs move sideways. (Paul Starosta/Stone/Getty Images) As you may have heard via a barrage of internet ...