When you look at a fossil on display, you may envision the world 66 million years ago. You might feel the earth shake beneath you as a large predator stalks the ancient floodplain. It has long, sharp ...

HELENA - The discovery of 70-million-year-old soft tissue from a Tyrannosaurus rex unearthed near Jordan is ranked by "Discover" magazine as one of the 10 most important science stories of the year.

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...