For the past hundred years, paleoartists have depicted T. rex with a mouth like a crocodile's -- toothy and lipless. But new research suggests these dinos may have had lizard-like lips. Learn more in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/dinosaurs/t-rex-lips.htm

What Pranks Have Astronauts Pulled?
08:40

How Can Your Body Learn to Tolerate Cold?
10:58

How Did the War of 1812 Settle the American Revolution?
10:23