This is an encore episode, picked by our Patreon supporters. If you want to go vote for our next encore, just go to patreon.com/tumblepodcast to go vote! You don't have to be a patreon supporter to vote, but it does help!
Why do bubbles pop, and why do bubbles have shadows? We’re in double bubble trouble with two listener questions. Luckily, Dr. Bubbles is here to save the day! We’ll find out how a normal, everyman physicist named Justin Burton became a superhero bubble scientist, on a quest to make a scientifically proven recipe for giant bubbles. Along the way, we’ll discover the answers to our listeners’ bubbling curiosity. 
Hear from the inventor of edible bubbles, Li Wei Tan, in a bonus interview episode available on our ad-free Patreon feed! It’s available for just $1/month when you pledge to support Tumble at patreon.com/tumblepodcast. 
We’ll have free resources about bubbles on the blog on our website, sciencepodcastforkids.com.
If you want to buy tickets to our live event in West Stockbridge, go to bit.ly/TumbleLive! We'd love to see you there!