Italy's Mount Etna Is Sliding Into the Sea, and Now Scientists Know Why: About 8,000 years ago, its eastern flank is thought to have collapsed, triggering a tsunami that destroyed a coastal community in present-day Israel.

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Italy's Mount Etna Is Sliding Into the Sea, and Now Scientists Know Why: About 8,000 years ago, its eastern flank is thought to have collapsed, triggering a tsunami that destroyed a coastal community in present-day Israel.