Related Program: Science Friday True You By editor • Jun 22, 2017 Related Program: Science Friday TweetShareGoogle+Email Marina Muun for NPR Marina Muun for NPR Listen Listening... / Originally published on July 20, 2017 8:55 am Thanks to the following musicians: KRIKL&BE for the song "Whatcha Know" Peals for letting us use: Trillium, Wind Honey, and Tehachapi Loop. Blue Dot Sessions for Stale Case and Trois Gnossiennes. Copyright 2018 NPR. To see more, visit http://www.npr.org/. TweetShareGoogle+EmailView the discussion thread.