Trait data from more than 1,000 different vertebrate species suggests that new species often arise not because of pressures from different environments, but because of prolonged geographic separation ...

It has long been assumed that adaptation to different habitats plays an important role in the evolution of new species. Yet how important this influence truly is – particularly during the initial ...

What is ecological speciation? -- Predictions and tests of ecological speciation -- A source of divergent selection -- A form of reproductive isolation -- A genetic mechanism to link selection to ...

Introduction : Organization and causation -- The establishment of causal theories in evolutionary biology -- The nature and origin of life -- The course of evolution -- Organism and environment : ...