I watched this Nova show on PBS today about Global dimming. Global dimming is occurring because of particle pollution (everything you can see in the smoke when fuel is burned), and all the little particles are turning into smog and gradually blocking out the sun. It's crazy because global dimming is actually slowing down the immediate effects of global warming, (less sunlight=less heat) but it also does bad shit because the new clouds effect rainfall, causing famine in countries where the monsoon is relied upon. The 1984 famine in Ethiopia, scientists now know was partly caused by the global dimming. China and India, in thier rapidly developing stages, have extremely bad problems with this, because they rely on the monsoon, yet they are emitting tons and tons of particular pollution.
Various countries (USA, parts of Europe) have recently began to clean up particle pollution with filtration systems, yet they have made none or very few alterations dealing with greenhouse gas emmissions. So basically, by cleaning up our particle pollution and lessening Global Dimming, we are accelerating global warming. But if we don't clean up the particles, respiritory health will be shit, there will be horrible famine in the countries that house over half the worlds population, and not to meintion we might completely block out the sun.
Of course, even though none of this is immediate, my gut reaction is fuck. we are doomed.