Close your eyes and imagine a red apple. What do you see? Turns out there’s a whole spectrum of answers to that question and producer Sindhu Gnanasambandan is on one far end. In this episode, she explores what it means to see—and not see—in your mind.

Special thanks to Kim Nederveen Pieterse, Nathan Peereboom, Lizzie Peabody, Kristin Lin, Jo Eidman, Mark Nakhla, Andrew Leland, Brian Radcliffe, Adam Zeman, John Green, Craig Venter, Dustin Grinnell, and Soraya Shockley.

We have some exciting news! In the “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's your turn! Radiolab has teamed up with The International Astronomical Union to launch a global naming contest for one of Earth’s quasi-moons. This is your chance to make your mark on the heavens. Submit your name ideas now through September, or vote on your favorites starting in November: https://radiolab.org/moon

EPISODE CREDITS: 

Reported by - Sindhu Gnanasambandan
Produced by - Sindhu Gnanasambandan
with help from - Annie McEwen
Original music and sound design contributed by - Dylan Keefe
with mixing help from - Jeremy Bloom and Arianne Wack
Fact-checking by - Natalie Middleton
and Edited by - Pat Walters

Sign up for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.

Leadership support for Radiolab’s science programming is provided by the Gordon and Betty Moore Foundation, Science Sandbox, a Simons Foundation Initiative, and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.