Some of Darwin's finch nestlings have a yellow beak. The discovery of why that is may offer clues about the differences in how species evolve.

Until now, no one had properly tested Darwin's hypothesis on the link between cleistogamy and bilateral symmetry in flowers.

A new theory solves a problem with Charles Darwin's idea of early life evolving in "warm little ponds" despite the world being covered in oceans.

You can check out handwritten pages from Charles Darwin's draft of his famous On the Origin of Species online, including 2 newly added pages.

Darwin's theory of evolution should be expanded to include consideration of a DNA stability "energy code"—so-called "molecular Darwinism"—say scientists.

Charles Darwin's theory about the formation of atolls is elegant, but doesn't reflect key information: sea level. Researchers now correct his work.

Bacteria buck Charles Darwin's theory of "survival of the fittest" and instead work together to lift up the weakest in their group to boost survival.