350 - the most important number on earth

Evidence is accumulating that we've passed the tipping point in the global warming crisis.

"If humanity wishes to preserve a planet similar to that on which civilization developed and to which life on Earth is adapted," it said, "paleoclimate evidence and ongoing climate change suggest that CO2 will need to be reduced from its current 385 ppm to at most 350 ppm."


DIY conservation makes great practical sense, but we won't save the planet that way. One by one, trying to do the right thing, we add up to...not nearly enough. You cannot make the math work that way—there are too many sockets and too many tailpipes and most of all too much inertia for voluntary action to do the trick.