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Around 250 million years ago, most life on Earth was wiped out in an extinction known as the “Great Dying.” A team led by University of Cincinnati geologist Thomas J. Algeo finds that the end came slowly from thousands of centuries of volcanic activity.
More than 251 million years ago, at the end of the Permian period, Earth almost became a lifeless planet.
- Stoppage; cessation (of labor).
- A standing still or idling (of mills, factories, etc.).