With help from the Salvation Army’s Angel Tree program and The Observer’s Empty Stocking Fund, this dad knows his son will ...

Alligators and crocodiles differ in some key ways, from their scales to teeth to snout shape and beyond. Watch the latest ...

Most of the footprints are elongated and made by bipeds. The best-preserved ones bear traces of at least four toes.

Ford stock rises after it takes a huge EV charge. Here is the good news.

Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater ...

New University of Maryland research suggests that dinosaur parenting strategies helped transform the Mesozoic world, as “latchkey kid dinosaurs” spread into ecological niches their parents left ...