> No, it's based on studies of modern [0] and prehistoric plants. The Carboniferous period for example had CO2 levels comparable to today's and an explosion of

> No, it's based on studies of modern [0] and prehistoric plants. The Carboniferous period for example had CO2 levels comparable to today's and an explosion of coal forming plant growth. So back then they were "rapidly" sequestering it out of the atmosphere rather than doing their darndest to put it back in the air? Do we also need to resurrect all those prehistoric plants to help deal with it instead of burning and clearing the tropical rainforests we currently have? If the Carboniferous is how nature deals with too much CO2 over millions of years, we certainly aren't letting it take the same approach this time.