Around 252 million years ago, volcanoes across what is now Siberia erupted repeatedly for more than a million years, releasing perhaps 100,000 billion tonnes of carbon dioxide and helping wipe out roughly 90 per cent of marine species in the deadliest mas – Space Daily

Around 252 million years ago, volcanoes across what is now Siberia erupted repeatedly for more than a million years, releasing perhaps 100,000 billion tonnes of carbon dioxide and helping wipe out roughly 90 per cent of marine species in the… Around 252 million years ago, volcanoes across what is now Siberia erupted repeatedly for more than a million years, releasing perhaps 100,000 billion tonnes of carbon dioxide and helping wipe out roughly 90 per cent of marine species in the…