Did you know that the second week of March is Brain Awareness Week around the globe? You didn’t? You weren’t aware of your brain? Conscious of your consciousness? Well, get with the program. March is perhaps the brainiest month of the year—it’s also when we celebrate the 1879 birthday of famous smarty-pants Albert Einstein, and the 1946 beginning of Mensa intelligence testing. But it turns out people will believe just about anything they hear about what’s going up between their ears. We’ve asked Ken Jennings to fact-check some particularly lame-brained misconceptions about gray matter.
The Debunker: Did Big Dinosaurs Have a Second Brain?
Yale paleontologist Othniel Charles Marsh was one of the great dinosaur experts of the 19th century, naming pretty much every extinct lizard you see today in museum lobbies or children’s books: Allosaurus, Diplodocus, Triceratops, Apatosaurus. Much of his work centered on the dinosaur he called Stegosaurus, meaning “covered lizard.” In 1881, he made a cast of a Stegosaurus skull, and was astounded to find that the giant animal probably made do with a 3-ounce brain, no bigger than a lime. (Not quite the “brain the size of a walnut” from popular accounts, but close.)