The Cornell Lab of Ornithology today announced the release of a new online tool for studying biodiversity and the evolutionary relationships among birds: the illustrated Birds of the World Phylogeny ...

Researchers in Costa Rica have unearthed fossils from a mastodon and a giant sloth that lived as many as 40,000 years ago, officials announced Friday, calling it the biggest such find here in decades.

We report that warming enhances soil carbon accumulation in boreal Sphagnum peatlands through an increase in plant productivity and iron protection, as well as through the inhibition of microbial ...