You are here
Home > Posts tagged "Extinctions"

250 million years ago, toxic coal ash caused a mass extinction

One of the biggest episodes of mass extinction may have been caused 250 million years ago because of toxic ash resulting from burning coal. In the current Nature Geoscience, a team led by Stephen Grasby of the Geological Survey of Canada—Calgary, report evidence the eruption of the Siberian volcanoes torched massive

Top