I'm sure this cycle is not unlike the cycle that warmed the Earth during the rise of the Roman empire. We've (as "modern" and "civilized" humans) have only been on the earth for what, 10,000-15,000 years? It's also during a warmer period - normally the Earth is a lot cooler - making the mini ice-age in the mid 1800s look like a summer day.
Don't get me wrong - pollution is bad regardless.





















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