active predator, the mighty Tyrannosaurus rex needed a way to cool down. Now, scientists say that two large holes in its skull acted as a kind of internal "air-conditioning unit", to help the ...
Standing roughly 8ft (2.4m) tall, the predator would have cut an intimidating figure. Like its tyrannosaur relatives, the carnivorous dinosaur had a long, deep snout, bumps on its skull and large ...