A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...

A recent study shows that marine oxygen levels were crucial to the evolution of early Paleozoic trilobite body size, ...

Researchers have shed new light on how the environment promotes the generation of new species. A study led by Dr. Benjamin ...

But when the researchers peered inside, they saw something different ... evolved from land animals and share lineage with hippos. But there are few examples that show evolution from water ...