A CT scan of an ancient marine reptile that was entombed while pregnant has revealed a huge surprise — there were two fetuses inside her fossilized remains. "Twins! She has another baby," Judith Pardo ...

The Lower Granite Dam on the Snake River enables shad and salmon to ascend. While some observers speculate that thriving shad negatively impacts salmon, researchers can find no evidence that such is ...

A new study from the University of Chicago has uncovered the surprising origin of the flexible joints that allow us to move our shoulders, knees, and elbows smoothly. These joints, called synovial ...