It's not what you do, it's how readily you do it. Rapid evolutionary change might have more to do with how easily a key innovation can be gained or lost rather than with the innovation itself, ...

Why are some species more likely to diversify than others? For the largest group of vertebrates, ray-finned fishes, the ability to evolve by transitioning back and forth between simple and complex ...

What explains the apparent ecological dominance of Homo sapiens? How did our species swell, in the span of just a few hundred thousand years, from scattered bands of hunter-gatherers eking out a ...

The cichlid fish of Africa's Great Lakes have formed new species more rapidly than any other group of vertebrates. A new study shows that the ease with which these fish can develop a biological ...