Happy Dinosaur Week! Every episode this week explores the ancient marvels that walked the Earth millions of years ago. Fossilized bones and footprints help scientists figure out what these prehistoric creatures looked like – but how do we know what they sounded like? We asked paleontologist and science journalist Shaena Montanari to help us find the answer.

Got a question that makes you want to roar in frustration? Send it to us at BrainsOn.org/contact and we’ll find a dino-mite answer.

A long time ago, in a galaxy far far away… we wondered, could you ever build a real lightsaber like the ones in Star Wars? A lightsaber is a glowing sword that can cut through metal – and pretty much anything else you can think of. It’s the favorite tool of heroes like Luke Skywalker and Ahsoka Tano, as well as villains like Darth Vader. That’s just in the movies, but could we make them real? We asked mechanical engineering professor Sayan Biswas to help us find the answer.

Got more questions than Luke when he was training with Yoda? Send them to us at BrainsOn.org/contact, and we’ll help use the force to find an answer!

Megalodon was the biggest shark species that ever lived. The biggest ones were almost 60 feet long, which is longer than a school bus! These gigantic sharks went extinct millions of years ago, but why? We asked paleontologist Kallie Moore to help us find the answer.

Got a question that you megalo-don’t know how to answer? Send it to us at BrainsOn.org/contact, and we’ll hunt down an expert to explain!