Skybound's ongoing Transformers comics just took another big swing with Optimus Prime by replacing him with another Prime as the Autobots' leader.

Tyrannosaurus rex is one of the most recognizable names of the dinosaur world, a hulking and terrifying meat-eating behemoth.

A fossil tyrannosaur pulled from the badlands of southern New Mexico has forced paleontologists to rethink when giant predatory dinosaurs first reached extreme body sizes in North America. The ...