The battle still rages on for the title of the largest dinosaur to walk the Earth. As more time passes, we uncover more evidence of these prehistoric giants. And we're not talking about just the plant eaters, but the meat-eating dinosaurs too. Just how big were the mightiest sauropods, and could these giants really have fallen prey to the ferocious meat-eaters during their time? Could the mighty Giganotosaurus, or the huge and scary Spinosaurus, defeat a Tyrannosaurus-rex in battle? And could th