There's Something MUCH Bigger Than Yellowstone. And It Will Happen Again.

PBS Terra

Check out our Patreon: https://www.patreon.com/cw/PBSWeather... Annual Survey: https://to.pbs.org/2025SurveyWTHR Weathered Merch: https://crowdmade.com/collections/wea... Yellowstone was massive. Roughly a thousand times larger than the eruption of Mt. St. Helens, the biggest eruption in the histo