Science Music & Culture What is it about a lullaby that helps kids fall asleep? 5:29pm May 26, 2023 by Selena Simmons-Duffin Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2023 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered Doctors in Sudan recount horrors of ongoing fighting at hospitals by Michele Kelemen Families of missing Mexicans take over a prominent space in Mexico City 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate