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I feel in the environmental question we're quite doomed, unless some breakthrough in nanotechnology is achieved. As I mentioned before, I'm Brazilian, most of our electricity is produced by hydroelectric plants, almost all of our oil is produced through deep-sea exploration which if I'm not mistaken, the barrel of oil needs to be at least 38 American dollars in order for it to be profitable, also Brazil is the worlds biggest producer or Sugar Cane, sugar and ethanol, with at least 30% of the automotive fleet running on ethanol,(blended gasoline and pure ethanol) with nearly all passenger cars being produced nationally capable or running on gasoline, any blend, or pure ethanol. I don't know if many of you actually ever though of this, but regardless of market price, oil tends to have a never changing contractual "in soil" price, and the cost of extraction, American oil companies would never even consider extracting oil at nearly 38 dollars of operational cost. Of course this same principle applies to ethanol, which is only profitable when the barrel is above a certain price, which is something like 42 dollars(I could mistaken), which can never be comparable with good middle eastern oil, with could cost as little as 10 dollars a barrel.
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