Climate Change Requires Action NOW!
We need to take immediate effective action to mitigate climate change. The window of opportunity is closing very fast. Many projections show that we need to stabilize our emissions by 2015 and then reduce them to zero rapidly to reduce the level of carbon dioxide in the atmosphere below 350 ppm as recommended by most established climate scientists. At present the level of carbon dioxide in the atmosphere is around 390 ppm. In pre-industrial times the level was around 280 ppm.
One of the most respected scientists who has been making this point is James Hansen, who heads the NASA Goddard Institute for Space Studies. Bill McKibben's organization 350.org has been promoting this target for several years.
ecoSanity is a Toronto-based organization which has been emphasizing the the critical nature of the climate crisis for some time.