WORLD SCIENCE
New evidence suggests a volcanic eruption caused the largest mass extinction in Earth’s history, about 250 million years ago, researchers say.
About 95 per cent of life was destroyed in the sea and 70 per cent on land in that incident, according to scientists. Researchers at the University of Calgary in Canada believe they have found evidence that massive volcanic eruptions burnt huge volumes of coal, producing ash clouds that broadly affected the oceans.
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