> But most importantly, we have no clue if our current carbon levels are any sort of maxima in regards to what the planet can handle. We just have our own little recent industrialized history, and some charts about the past that are, at best, educated guesses.
The article mentions massive amounts of C02 released 500 million years ago by volcanic activity in the Siberian Traps. The dinosaurs evolved on an Earth with six times the amount of C02 in the atmosphere we have today. So we're nowhere near a maxima. It's just a question of how difficult climate change will be for our civilization and parts of the biosphere we rely on.
The article mentions massive amounts of C02 released 500 million years ago by volcanic activity in the Siberian Traps. The dinosaurs evolved on an Earth with six times the amount of C02 in the atmosphere we have today. So we're nowhere near a maxima. It's just a question of how difficult climate change will be for our civilization and parts of the biosphere we rely on.