The Epic Siberian Journey to Solve a Mass Extinction Mystery

A quarter-billion years ago, huge volcanic eruptions burned coal, leading to the worst extinction in Earth’s history. Here’s how scientists hunted down the evidence.

The Epic Siberian Journey to Solve a Mass Extinction Mystery
A quarter-billion years ago, huge volcanic eruptions burned coal, leading to the worst extinction in Earth’s history. Here’s how scientists hunted down the evidence.
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