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607 Billion to 836 billion in 9 years. That is horrible growth. Do the math. It's around 3.6% per year. That's a horrible return. There are very many options with higher yield and lower risk. By risk, I mean the greed based risk to capital, not environmental risk.
PEPCO tells you how much carbon dioxide your electricity consumption produced and the breakdown of its sources. This is a fantastic service. It's amazing to think that you've created many times your own weight in green house gases in only a year.
Carbon trading is great idea. So is popularizing the notion of a personal carbon footprint. If people begin to think of their energy consumption habits in terms of environmental impact in cold hard numbers, and if those cold hard numbers are monetized, habits will change.
Ever heard of him?