- Coal burning in Siberia triggered by volcanic eruptions led to Earth's most severe extinction Daily Mail
- Massive Coal Burning Linked to 'Great Dying': The Worst Extinction in Earth's History ScienceAlert
- Coal-Burning in Siberia 250 Million Years Ago Led to Climate Change & Caused the Earth’s Most Severe Extinction Event SciTechDaily
- Coal May Have Significantly Driven the Great Dying That Wiped Out Life on Earth, Scientists Say Sputnik International
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