SIn this hour, we hear about a materials science advance that makes metal repel water, discuss black holes with Roger Penrose, learn about the health of coral reefs off the coast of Cuba, and take a tour of the Explorers Club.
The story you just read is not locked behind a paywall because listeners and readers like you generously support our nonprofit newsroom. Now more than ever, we need your help to support our global reporting work and power the future of The World. Can we count on you?