Sam Bankman-Fried built a reputation as the one reliable crypto bro. But within the span of days, his empire came crashing down. What the rise and fall of crypto's 30-year-old elder statesman says about the story of crypto so far. Subscribe to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Sand. It's in buildings, windows, your cell phone. But there isn't enough in the world for everyone. And that's created a dangerous black market. Subscribe to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy