Analysis - For decades, scientists have been learning more about the diets of early hominins, particularly their reliance on plants. Yet we still don't know when these ancestors of humans started ...

Learn about the evolutionary ease of cichlid fishes, which transition from simple to complex teeth (and vice-versa) faster ...

He could smile and frown, only a few seconds apart. I preferred it when his lips were closed, but, as he loved to laugh occasionally, his uneven teeth, the two front ones out of proportion to the rest ...

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 ...