Lights Flashed in the Sky During Mexico's Latest Earthquake. Why?

On the night of Sept. 7, 2021, a magnitude 7.0 earthquake rocked southwest Mexico and ricocheted across social media. Online, people posted about strange flashes of light in the sky at the time of the quake. The hashtag #apocalipsis gained traction. What exactly was going on?Explore the theories behind Mexico’s earthquake lights and whether or not we may see them again as the ground continues to shift beneath us.Production Credits:Produced by:Ari DanielProduction assistance:Robert Boyd, Shyla Duff, & Christina MonnenArchival:Bulletin of the Seismological Society of AmericaEdgeworx StudiosGoogle MapsMitch ButlerShutterstockStoryblocksUSGSMusic: APM© WGBH Educational Foundation 2021