we watched a very depressing video during physical geog today. basically, it talked about this 2 climatic phenomena - global warming and global dimming (this caused the ethiopian famine), and how pollution is the main culprit behind them. despite the decrease in pollution in certain countries, the inability for us to remove CO2 in the air (which comes from burning coal etc for energy) will worsen global warming. and it's jus a vicious cycle- the world will become hotter and hotter, the ice caps melt, plants cant grow, ppl die of famine, etc etc. you must watch the video yourself (which is very nicely filled with horror movie- worthy music) and you will come out depressed. btw, the effects will hit in by 30-4o yrs, so don't think it doesnt affect you. recycle and save electricity!