The 1815 eruption produced 60 megatons of sulfur, and as a result, average global temperatures dropped by around 3°C (5.4°F).
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15 Historic Landmarks That Used To Look Completely Different
From the Eiffel Tower's first colors to the original Penn Station, explore how iconic landmarks worldwide looked in the past ...
Seven thousand six hundred years ago, a volcanic eruption of unprecedented scale rocked Western North America.
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