The massive, hollow crests that protrude like bananas from atop the heads of duck-billed dinosaurs did not help their sense of smell, as previously believed. A new study still doesn't quite rule out some of the more outlandish theories for what the crest did do, including that it possibly functioned as a brain cooler or snorkel. David Evans reconstructed the brain cavity of an herbivorous lambeosaur, also known as the "cows of the Cretaceous period," creating the first ever cast of the dino's brain, which was about the size of your fist. Lambeosaurs roamed the planet from 85 million to...
