If the head-axe theory sounds vanishingly implausible to you, fair enough. But this is a legitimate, if disputed, line of scientific inquiry, supported by some eminent paleontologists, and there are a ...

Forget those sluggish tail-draggers you’ve seen plodding through old cartoons—in the real world, many dinosaurs lived fast and died young. Meet Allosaurus, a fearsome hunter with a knack for war ...