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Modern birds emerged in a snap of evolutionary time through a series of simple genetic changes.
The largest evolutionary tree ever compiled leads researchers to conclude that chance mutation — not natural selection — drives the development of new species.
Life’s first epoch saw incredible advances — cells, metabolism and DNA, to name a few. Researchers are resurrecting ancient proteins to illuminate the biological dark ages.
The comb jelly, a primitive marine creature, is forcing scientists to rethink how animals got their start.
An infection sweeping through Australia’s struggling koala population provides an unprecedented opportunity to explore how retroviruses insert themselves into the genome.
A new solution to the prisoner’s dilemma, a classic game theory scenario, has created new puzzles in evolutionary biology.
All life on Earth is made of molecules that twist in the same direction. New research reveals that this may not always have been so.
Microscopic creatures called bdelloid rotifers have thrived without mating for millions of years. How they did it could reveal why sex is so essential for almost everyone else.
A study of diverse colonies of spiders supports a controversial idea in evolution — that natural selection can act on communities as well as on individuals.