When an underwater volcano in Tonga erupted violently in mid-January, it generated something that scientists hadn’t seen in more than half a century: a shockwave in the atmosphere. The wave circled Earth for days. Scientists will be studying it for years. https://t.co/eo43Nlacfv pic.twitter.com/HKHnFWgIyI

— The New York Times (@nytimes) April 16, 2022