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Researchers piece together what caused volcanic eruption in Tonga

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This article is more than 1 year old.

NASA scientists say the massive volcano eruption near Tonga was equivalent to 10 megatons of TNT. They believe the explosion was triggered by seawater flooding into a chamber filled with magma.

NPR's Geoff Brumfiel reports.

This segment aired on January 21, 2022.

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