Planet Money Folgen

Most economic textbooks will tell you that there can be real dangers in running up a big national debt. A major concern is how the debt you add now could slow down economic growth in the future. Economists have not been able to nail down how much debt a country can safely take on. But they have tried.Back in 2010, two economists took a look at 20 countries over the course of decades, and sometimes centuries, and came back with a number. Their analysis suggested that economic growth slowed significantly once national debt passed 90% of annual GDP... and that is when the fight over debt and growth really took off.On today's episode: a deep dive on what we know, and what we don't know, about when exactly national debt becomes a problem. We will also try to figure out how worried we should be about the United States' current debt total of 26 trillion dollars.This episode was hosted by Keith Romer and Nick Fountain. It was produced by Willa Rubin and edited by Molly Messick. It was fact-checked by Sierra Juarez with help from Sofia Shchukina and engineered by Cena Loffredo. Alex Goldmark is Planet Money's executive producer.Help support Planet Money and hear our bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

For thousands of years, getting light was a huge hassle. You had to make candles from scratch. This is not as romantic as it sounds. You had to get a cow, raise the cow, feed the cow, kill the cow, get the fat out of the cow, cook the fat, dip wicks into the fat. All that--for not very much light. Now, if we want to light a whole room, we just flip a switch.The history of light explains why the world today is the way it is. It explains why we aren't all subsistence farmers, and why we can afford to have artists and massage therapists and plumbers. (And, yes, people who make podcasts about the history of light.) The history of light is the history of economic growth--of things getting faster, cheaper, and more efficient.On today's show: How we got from dim little candles made out of cow fat, to as much light as we want at the flick of a switch.Today's show was hosted by Jacob Goldstein and David Kestenbaum. It was originally produced by Caitlin Kenney and Damiano Marchetti. Today's rerun was produced by James Sneed, and edited by Jenny Lawton. It was fact-checked by Sierra Juarez. Engineering by Valentina Rodríguez Sánchez. Alex Goldmark is Planet Money's executive producer. Help support Planet Money and hear our bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

There is a constant arms race between law enforcement and criminals, especially when it comes to technology. For years, law enforcement has been frustrated with encrypted messaging apps, like Signal and Telegram. And law enforcement has been even more frustrated by encrypted phones, specifically designed to thwart authorities from snooping. But in 2018, in a story that seems like it's straight out of a spy novel, the FBI was approached with an offer: Would they like to get into the encrypted cell phone business? What if they could convince criminals to use their phones to plan and document their crimes — all while the FBI was secretly watching? It could be an unprecedented peek into the criminal underground. To pull off this massive sting operation, the FBI needed to design a cell phone that criminals wanted to use and adopt. Their mission: to make a tech platform for the criminal underworld. And in many ways, the FBI's journey was filled with all the hallmarks of many Silicon Valley start-ups. On this show, we talk with journalist Joseph Cox, who wrote a new book about the FBI's cell phone business, called Dark Wire. And we hear from the federal prosecutor who became an unlikely tech company founder. Help support Planet Money and hear our bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy