Never mind outrunning a T. rex — you could probably outwalk it

In the movie "Jurassic Park" (Warner Bros, 1993), a carful of terrified people famously tries to escape a loping T. rex, but science quickly threw shade at the movie beast and demonstrated that the king of tyrannosaurs wouldn't have been fast enough to run down a jeep. Now, researchers have slowed down the big dinosaur even more. New simulations based on tail movement showed that T. rex wasn't even a quick walker. In fact, its preferred walking speed clocked in at just under 3 mph (5 km/h), about half the speed of earlier estimates. To put that into perspective, that's about the average walking speed for a human, according to the British Heart Foundation.