Paleontologists Mark Goodwin and Jack Horner have dug for 11 years in Montana's Hell Creek Formation in search of every dinosaur fossil they can find, accumulating specimens of all stages of development. Their new report on the growth stages of

Scientists report a major step forward in the development of an effective therapy against two deadly viruses, Nipah virus and the related Hendra virus.

Paleontologists have discovered a new species of dinosaur that lived 112 million years ago during the early Cretaceous of central Montana. The new dinosaur, a species of ankylosaur is the biological version of an army tank. It is protected by

Unnoticed by the nearby residents of St. Johnsbury, Vt., tiny leaf beetles that flit among the maple and willow trees in the area have just provided some of the clearest evidence yet that environmental factors play a major role in