[Mr_Moonlight]

Have another toke .......

[Tolerance Sucks Rocks]

Well, this is interesting. Some people say we shoudn't go above 550 ppm or 560 ppm of CO₂. Others, including a certain FReeper, say 450 ppm is better (above 450 would make it more difficult for wildlife to survive or some such). Now, we have 350 ppm by Bill McKibben.

We have 350. Do we hear 280? 280? 280? How about 150? 150? 150? How about zero, in which case, all plants die, and therefore, we ALL die, either by freezing or starving.