Jurassic World may be the biggest movie in the world right now, but that doesn't mean its star, Chris Pratt, knows anything about dinosaurs.
Luckily Youtube member Vsauce was on hand to bring Pratt's questions to Jack Horner, dinosaur expert and consultant for all of the Jurassic Park films. If you've ever had questions about fossil fuels or dinosaur poop, this paleontologist has got the answers.