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

The story of Charles Darwin’s life. His theory of evolution changed the way we understood our place in the world.

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

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 ...