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, ...

Scientists have long assumed that anemonefish's tight-knit relationship with sea anemones, their protective hosts, was the main engine behind their evolutionary diversification. But the team wondered ...

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 ...