World’s Worst Die-Off: Hell on Earth

World’s Worst Die-Off: Hell on Earth

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During the world’s biggest mass extinction, Earth seemed pretty close to a description of hell—fiery, smoky, and explosive—created by massive volcanic eruptions, according to research dug up in China. In geologic terms, it was surprisingly quick, and it may provide a scary lesson about climate change for our future, authors of the new study say.