Scientists captured video of orcas ramming into sunfish with such force that the fish exploded. The behavior may be for fun as well as for feeding, they report.

Paleontologists have long hailed Tyrannosaurus rex as king of the dinosaurs. Now, the name “T. rex” also belongs to a newly described extinct carnivore — a massive marine reptile with the scientific ...

CNN’s Christopher Lamb visits the Vatican Observatory, a centuries-old center of astronomical research where faith and ...

As the risk of crashes between objects in Earth orbit continues to grow, a new vote highlights the debate over who has the authority to police these spacecraft.