A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

Environmental change doesn’t affect evolution in a single, predictable way. In large-scale computer simulations, scientists ...

An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

It may have fewer than many of the other sciences, but biology does have two dozen or so “rules”—broad generalizations about ...

Yet modern biology has revealed that cells are preternaturally sophisticated assemblages — literally automated, miniaturized factories. How could the evidence have been overwhelming but now orthodoxy ...

A major evolutionary theory says most genetic changes don’t really matter, but new evidence suggests that’s not true. Researchers found that helpful mutations happen surprisingly often. The twist is ...

Birds are the most diverse land vertebrate on the planet, and now scientists have constructed a complete evolutionary tree of the 11,000 or so known species. This data came from hundreds of studies ...

A few days before they were to submit a scientific paper together, an evolutionary biologist in Europe received an unexpected request from two co-authors in the United States. After much thought, the ...

A study published in the Nature journal alters how the evolution of fish has been historically understood. Fossilized fish and other sea creatures have often been pivotal in new scientific discoveries ...