At the dawn of the industrial revolution, the Earth’s atmosphere contained 278 parts of CO₂ per million. Today, after more than two and a half centuries of fossil fuel use, that figure is around 414 parts per million (ppm). If the build-up of CO₂ continues at current rates, by 2060 it will have passed 560 ppm—more than double the level of pre-industrial times.
Click here for original story, Just how sensitive is the climate to increased carbon dioxide? Scientists are narrowing in on the answer
Source: Phys.org