Is 350 The Magic Number?
Seems so. That's the number of parts per million of CO2 that the planet can seem to handle reasonably safely. We are not there. We are somewhere above that number. The higher we go, the more stress on the planet - more global warming, more Al Gore movies, more apocalyptic scenes from the bible...
Seriously, there is a site that is dedicated to educating the population and creating pressure on thought leaders around the world to bring that number down. Bill McKibben and his colleagues are serious people with the hard data of science and the soft power of persuasion backing them up.
Take a look HERE at 350.org. Help get that number down.