We were close to the start of an extinction event. ~180 ppm is the minimum amount of CO2 that the planet needs for plant life to exist. We were below 300 ppm at one point. I think its around 450 ppm now. 1000-5000 ppm is ideal AFAIK. The climate doomers have it backwards.
We were close to the start of an extinction event. ~180 ppm is the minimum amount of CO2 that the planet needs for plant life to exist. We were below 300 ppm at one point. I think its around 450 ppm now. 1000-5000 ppm is ideal AFAIK. The climate doomers have it backwards.