The volcanic eruption in January 2022 was more powerful than the largest ever nuclear explosion in the US, scientists have confirmed.Hunga Tonga-Hunga Ha'apai, an underwater volcano in the South Pacific, blasted 20,000 Olympic swimming pools-worth of water into the stratosphere.It triggered a 7.4 magnitude , sending tsunami waves crashing into the island that were felt as far away as Russia, the US and Chile.
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