Evolution

Two dynamic, seemingly opposing forces likely played an important role in the evolution of reproduction and child rearing in social animals like bees and humans.

A newly discovered mechanism may enable viruses to shuttle genes between bacteria 1,000 times as often as was thought — making them a major force in those cells’ evolution.

By using the power of evolution to solve practical problems, three researchers opened new avenues to chemical discovery.

The first animal genus defined purely by genetic characters represents a new era for the sorting and naming of animals.

How much stock should we put in mathematical models of evolution that have not been validated by rigorous empirical data?

Gene-sequence data is changing the way that botanists think about their classification schemes. A recent name-change for a common houseplant resulted from the discovery that it belonged in an overlooked genus.

Evolutionary stories like the grandmother hypothesis are easy to construct from mathematical models, but how well do they reflect reality?

Evolution may have coopted an ancient metabolic mechanism to set social insects on the path toward one of the most puzzling behaviors found in nature.

Some species have the equivalent of many more than two sexes, but most do not. A new model suggests the reason depends on how often they mate.