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Past greenhouse warming events provide clues to what the future may hold

Scientists studying an extreme period of global warming 55 million years ago are piecing together an increasingly detailed picture of its causes and consequences. Their findings describe what may be the best analog in the geologic record for the global changes likely to result from continued carbon dioxide emissions from human activities.

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Keywords: past, greenhouse, warming, events, provide, clues, future, hold, event, clue

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