Recent research has uncovered a fascinating mechanism in the nematode worm C. elegans that could have profound implications ...

DNA shines a light back into the past, showing us things that fossils can't. But how far back can that light extend? Some of the oldest DNA sequences come from mastodon and polar bear fossils about 50 ...

The human genome is made up of 23 pairs of chromosomes, the biological blueprints that make humans … well, human. But it turns out that some of our DNA — about 8% — are the remnants of ancient viruses ...

A spider on the Canary Islands lost half its DNA but gained more genetic variety. Scientists say this changes how we ...