Have you ever wondered why a guitar sounds different from a violin? Or why a banjo is twangy and a cello is mellow? Then this episode is for you!

Join Molly and co-host Ellie as they explore the ear-tickling world of string sounds! Together, they’ll learn about sound waves, and visit the Brains On instrument petting zoo, where they'll learn about all the amazing sounds that stringed instruments can make. Plus, a shiny new mystery sound!

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Today’s episode is sponsored by:
- Poshpeanut.com/brainson - Receive 20% off your first order
- Indeed.com/brainson - Receive a $75 sponsored job credit with code brainson
- Paramount’s IF - From writer and director John Krasinski comes a new film about what happens to our Imaginary Friends (IFs) when we grow up. Out in theaters on May 17th!

Looks like Marc has a beautiful new plant but doesn’t know where to put it. Direct sunlight or indirect sunlight? It’s too hard to figure out! But you know what’s not hard to figure out? Whether or not you should play Molly’s new game, Radical Design! Grab your Smarty Pass to see what producers Marc Sanchez and Rosie duPont think homes would look like on other planets!

Humans have visited the Moon but we’ve never lived there. Could we build a home on our lunar neighbor? Join Molly and co-host Ira as they find out why the Moon can be a dangerous place, and what it would take to live there. We’ll imagine a visit to a lunar hotel, hear about all the stuff humans have left up there and even hear a song sung by the Moon herself!

Featured Expert: Phil Plait, astronomer, journalist and author of several books, including, Under Alien Skies: A Sightseer’s Guide to the Universe, which uses science and imagination to paint a picture of what it would be like to vacation on the moon.

Subscribe to Smarty Pass for ad-free feeds, bonus episodes, and ticket discounts!

Today’s episode is sponsored by:
- Poshpeanut.com/brainson - Receive 20% off your first order
- Indeed.com/brainson - Receive a $75 sponsored job credit with code brainson
- Paramount’s IF - From writer and director John Krasinski comes a new film about what happens to our Imaginary Friends (IFs) when we grow up. Out in theaters on May 17th!