Geobiologists Link Ancient Climate Change And Mass Extinction

REDORBIT: About 450 million years ago, Earth suffered the second-largest mass extinction in its history--the Late Ordovician mass extinction, during which more than 75 percent of marine species died. Exactly what caused this tremendous loss in biodiversity remains a mystery, but now a team led by researchers at the California Institute of Technology (Caltech) has discovered new details supporting the idea that the mass extinction was linked to a cooling climate. "While it's been known for a long time that......

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