What is the 2 centigrade critical point exactly?
Two degrees centigrade is the critical point at which climate change will take hold and we will no longer be able to actually control our impact on climate. Above 2 degrees it could have the effect, for example, of turning rainforests into savannah grassland so that you are losing the carbon that was stored in the trees, but you are also losing your carbon sink that was taking carbon dioxide out of the atmosphere. It may also be that you lose the carbon dioxide trapped in the water too as the seas warm. The polar ice caps are melting at a faster rate than we first imagined. Currently the polar ice caps reflect sunlight whereas the seas absorb sunlight, so if we lose our reflectors sea temperatures are going to rise much quicker. Two degrees centigrade is the point at which these factors kick in and humans begin to have far less control over the changes. Earth Day Latest: Are there any real alternatives to fossil fuels in supplying our energy needs in the 21st century? To supply our ene
