An MIT study suggests some early life forms may have evolved the ability to use oxygen hundreds of millions of years before ...

Birds are the most diverse land vertebrate on the planet, and now scientists have constructed a complete evolutionary tree of the 11,000 or so known species. This data came from hundreds of studies ...

Duplicated genes that appear in every branch of the tree of life can provide us with insight into the evolution that occurred ...

Add Yahoo as a preferred source to see more of our stories on Google. The Sun's distance from Earth allows it to be habitable for life. DrPixel/Moment via Getty Images A popular model of evolution ...

Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 ...

Researchers describe a rare type of gene family, known as “universal paralogs”, that provides insight into evolutionary history predating the last universal common ancestor of all life. Detailed ...

The three-dimensional shape of a protein can be used to resolve deep, ancient evolutionary relationships in the tree of life, according to a new study. It is the first time researchers use data from ...

Biologists have long drawn the animal family tree with a hazy base, unsure which creature first split from the common ancestor that gave rise to everything from jellyfish to humans. Now, a new genomic ...