Scientists have uncovered a 400-million-year-old genetic secret that gave spiders the ability to produce silk and weave their webs. Spiders didn't begin their journey on Earth in the same way as they ...

A timeline of the spider fossil record -- Fossils -- Living fossils -- Chance and change -- Outward and upward -- Triumph over thin air -- Small changes, big benefits -- Spinning, running, jumping, ...

It's not easy to look at a sea spider and see an animal so representative of its kind that it may help scientists sort out the evolution of almost everything with eight legs. But that's the potential ...