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It's a while even on a geological time scale. By comparison, Pangea was a mere 175 million years ago. Half a billion years is 1/9th of the age of the Earth. Ano
by slavik81 7y ago
It's a while even on a geological time scale. By comparison, Pangea was a mere 175 million years ago. Half a billion years is 1/9th of the age of the Earth. Another half billion years in the future, geological changes are expected to have ended the carbon cycle, killing most plant life on Earth.