How do we know where, when, and for how long strikes and other labor actions happen in the U.S.? Since 2021, the Labor Action Tracker has been the only comprehensive database of strikes and other work stoppages in the country. Researchers Johnnie Kallas, Deepa Kylasam Iyer, and Luke O'Brien join NLF Editor Chris Maisano on the latest episode of Reinventing Solidarity to talk about their project and what we can learn from the numbers.