Earth's greatest mass extinction 252 million years ago wiped out 90% of species
The Great Permian Extinction, which occurred approximately 252 million years ago, wiped out nearly 90% of all species on Earth and is the largest mass extinction event in our planet's history. Scientists describe it as the death of "a world similar to our own" — rich in forests, life-filled oceans and complex ecosystems. The primary cause was massive volcanic eruptions in Siberia, which triggered rapid climate change and ocean acidification.
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