Two stories today. First, as we start to understand post-affirmative action America, we look to a natural experiment 25 years ago, when California ended the practice in public universities. It reshaped the makeup of the universities almost instantly. We find out what happened in the decades that followed. Then, we ask, why does it cost so much for America to build big things, like subways. Compared to other wealthy nations, the costs of infrastructure projects in the U.S. are astronomical. We take a trip to one of the most expensive subway stations in the world to get to the bottom of why American transit is so expensive to build. This episode was hosted by Adrian Ma and Darian Woods. It was produced by Corey Bridges, and engineered by Robert Rodriguez and Katherine Silva. It was fact-checked by Sierra Juarez. Viet Le is the Indicator's senior producer. And Kate Concannon edits the show. 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

The shocks of the pandemic economy gave us a bunch of enormous natural experiments, which helped to prove or disprove conventional economic thinking. Take, for example, the bullwhip effect, the idea that the further away from the customer you are in the supply chain, the more volatile your orders are likely to be. This theory played out at an enormous scale, in the pandemic. Consumers and companies overreacted to the risk of shortages by ordering more products and hoarding them, causing massive shifts in the supply chain – just like the theory says. And the pandemic gave us a lot of natural experiments like this. So, on this special live edition of Planet Money, we looked for other big economic lessons from the past three years, and we took this information and turned it into... a gameshow! It's Two Truths and a Lie: Econ Edition. We get into questions about the workforce and labor market during the pandemic, and how it affected how economists view the world. This episode was hosted by Mary Childs. It was produced by Dave Blanchard, and edited by Jess Jiang. It was engineered by Josh Newell with help from Robert Rodriguez. Original music by Jesse Perlstein.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