* Astronomy

What a 250 million-year-old volcanic explosion tells us about climate change

What can a volcanic explosion 250 million years ago tells us about climate change? According to planetary scientist Lindy Elkins-Tanton, director of Arizona State University's School of Earth and Space Exploration, with some detective work it can tell us quite a bit.
Elkins-Tanton and her colleagues visited central Siberia five times to investigate the apparent coincidence between the Earth's largest volcanic event on land, popularly known as the Siberian flood basalts, and the Earth's largest extinction, the end-Permian, 252 million years ago, when more than 70 percent of terrestrial species and more than 90 percent of ocean species went extinct.
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