Genetic evidence hints that Neanderthal and human interbreeding was strongly sex-biased, but the reason why is a mystery, reports Michael Marshall

Discoveries in Jurassic rocks reveal that birds were adept fliers earlier than scientists realized. Discoveries in Jurassic rocks reveal that birds were adept fliers earlier than scientists realized.

A new skeleton may finally confirm that Homo habilis – considered the first species in our genus – really existed, discovers Michael Marshall

A trial designed in partnership with young people should tell us more about how social media affects them, reports Michael Marshall

We often think of our ancestors as being a similar size to us, but they were actually much smaller, finds Michael Marshall