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The Boston Globe

Nation

Global warming remedies studied by scientists

One may deflect solar radiation

WASHINGTON — The 1991 eruption of Mount Pinatubo, a volcano in the Philippines, blasted enough fine particles and sulfur dioxide gas into the atmosphere to envelop the Earth in a high-altitude cloud for the better part of two months.

When scientists checked in 1992, they determined that the cloud had deflected enough sunlight to cool the planet by about 1 degree.

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