Earlier this fall, the Federal Trade Commission filed a high-stakes lawsuit against Amazon. In that suit, the FTC claims Amazon is a monopoly, and it accuses the company of using anti-competitive tactics to hold onto its market power. It's a big case, with implications for consumers and businesses and digital marketplaces, and for antitrust law itself. That is the highly important but somewhat obscure body of law that deals with competition and big business. And so, this week on Planet Money, we are doing a deep dive on the history of antitrust. It begins with today's episode, a Planet Money double feature. Two classic episodes that tell the story of how the U.S. government's approach to big business and competition has changed over time. First, the story of a moment more than 100 years ago, when the government stepped into the free market in a big way to make competition work. It's the story of John D. Rockefeller and Standard Oil, and a muckraking journalist named Ida Tarbell. Then, we fast forward to a turning point that took antitrust in the other direction. This is the story of a lawyer named Robert Bork, who transformed the way courts would interpret antitrust law. These episodes were produced by Sally Helm with help from Alexi Horowitz Ghazi. They were edited by Bryant Urdstadt. Alex Goldmark is Planet Money's executive producer. Help support Planet Money and get bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

Right now, a lot of school districts across the country are making a pretty giant change to the way public education usually works. Facing teacher shortages and struggling to fill vacant spots, they are finding a new recruitment tool: the four-day school week. Those districts are saying to teachers, "You can have three-day weekends all the time, and we won't cut your pay." As of this fall, around 900 school districts – that's about 7% of all districts in the U.S. – now have school weeks that are just four days long. And this isn't the first time a bunch of schools have scaled back to four days, so there is a lot of data to lean on to figure out how well it works. In this episode, teachers love the four-day school week, and it turns out even parents love it, too. But is it good for students? This episode was produced by Sam Yellowhorse Kesler with help from Willa Rubin. It was edited by Molly Messick and engineered by Maggie Luthar. Fact-checking by Sierra Juarez. Alex Goldmark is our executive producer. Help support Planet Money and get bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy