Study of 280 empirical papers suggests evolution is shaped by both individual advantage and competition between groups.

The second science -- Simple selection -- The genetic and ecological context of selection -- History, chance, and necessity -- The rate of genetic deterioration -- The rate of environmental ...

New research challenges the one-level view of evolution, showing natural selection works on individuals and groups together.

The bony facial protrusion might be an evolutionary byproduct that resulted from changes to other parts of the skull, according to a new study ...

The peppered moth is an iconic example of Charles Darwin’s theory of evolution by natural selection. For centuries peppered moths (Biston betularia) were common in the forests around Manchester, ...

The Indigenous peoples of the Bolivian highlands are survivors. For thousands of years they have lived at altitudes of more than two miles, where oxygen is about 35 percent lower than at sea level.