Why do bubbles pop, and why do bubbles have shadows? Dr. Bubbles is here to answer all the bubble questions we were bursting to ask! 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

Why do colors exist in the world? That’s what Phoebe wants to know. The answer might change how you think about the colors that you see!

Trash is one of the biggest problems on the planet. But scientists are coming up with solutions that might surprise you. In this Earth Day episode, we meet two researchers who are tackling trash in two very different ways. Kevin Solomon hopes to solve the challenge of recycling plastic with the help of meal worms, and Lily Pollans is figuring out what kids can do to help everyone make less trash. Find out how science can help tackle Earth’s biggest challenges - and how you ca

If you listened to my Mailbag episode, you probably came away knowing that play-doh has a lot of salt, but maybe not certain what the other ingredients are there for. In my exhaustive research, I found two versions of the Play-Doh recipe. The first is from the original patent, US 3,167,400, which lists the ingredients as follows: Grain Flour (hard winter wheat flour, first clears) Tap water Common Salt Borax Light hydrocrabon distillate such deodorized kerosene Another pat