What does carbon do to warm the earth? It holds in radiation. Thus radiation is the problem not necessarily CO2. This is why Bill Gates is/was pushing for chemtrailing the skies to help block that incoming radiation. The problem with the whole CO2 is causing warming concept is that this assumes that incoming energy levels are consistent and this more CO2 would hold more of the radiation. However this is not the case as more solar and cosmic radiation is being allowed into the atmosphere as the earths magnetic field weakens. Besides Carbon Dioxide is good for the plants.