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by premium-gecko
1809 days ago
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The planet is not on the brink of climate catastrophe due to human CO2 emissions. Why? The atmosphere has established a range from about 10C to 25C over the last 2B years or so. It gets warm, it gets cold. Global average temperature has increased and decreased many times, no need for humans to do anything. Recently it's been about as cold as it ever gets, so naturally it's expected that it will do like it has many times in the past, and get warmer. It's not even to its middle temperature; it's still a bit on the cool side. But what about the especially high CO2 level? It's actually not especially high. It's near the lowest it's ever been. Earth saw stuff like going from 3000 ppm to 4000. No tipping point, no climate catastrophe. We're much closer to a dangerous low point than a dangerous high point, since plant respiration fails around 150 ppm. |
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