Dogs and people with Williams syndrome may both owe their sociable personalities to changes in the same genes.
Analysis of dinosaur fossils showed that some parents warmed their eggs with body heat.
Millions of years before humans existed, insects cultivated fungus that could not survive in the wild.
New findings suggest current oxygen-producing bacteria borrowed the ability from a possibly extinct lifeform.
Pesticide-treated bed nets trigger rapid evolution and resistance in one common species of sub-Saharan African mosquito, new study finds.