In today's episode, Katie has 30 minutes to become an "expert" on... Roller-coasters! Hang on to your hats, kids! Literally, if you are on a roller-coaster, and figuratively if you are listening to this episode because it is one wild ride. Roller-coasters have such a fun history, and continue to be fun today. We went to 16th-century Russia to ride some ice-slides with Catherine the Great, Coney Island to see the creations of the father of the roller-coaster himself, La Marcus Thompson, and ended up on the tallest of all - Kingda Ka in none other than Jackson, New Jersey. Roller-coasters prove that you can have a total blast just using the simple laws of physics. Just consult your retina doctor before you whip around on all those twists and turns! Highlights Include: - From 1 to 149 in under 5 seconds - Roller-coaster riding mules - A demand from Walt Disney Follow on instagram @30minuteexpertpodcast and twitter @30minexpertpod Send us your expertise at [email protected] And please rate and review! Podcast artwork by Rick Radvansky Music by Jake Radvansky