Here’s what you’ll learn when you read this story: In the 1960s, Kimura’s neutral theory revolutionized molecular biology by arguing most DNA changes are random, not adaptive. A new study finds ...

All complex biological systems—like the DNA, RNA and proteins constantly being copied and built within our cells—are prone to errors. That means as life evolved to be more elaborate, it also had to ...

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Scientists uncovered how whole-genome duplication emerges and remains stable over thousands of generations of evolution in the lab. Sometimes, the most significant scientific discoveries happen by ...

A new suggestion that complexity increases over time, not just in living organisms but in the nonliving world, promises to rewrite notions of time and evolution. In 1950 the Italian physicist Enrico ...