Find out what really drove the dinosaurs to extinction in this funny, wacky celebration of underpants from top-selling author-illustrator team Claire Freedman and Ben Cort The mystery of dinosaur extinction is solved Scientists have plenty of theories about why dinosaurs are extinct, but the UK's bestselling authorillustrator team of Claire Freedman and Ben Cort knows the real answer: The dinos were wiped out in an Underpants War ...