Here is what the future may hold if roadmaps, predictions and policy targets all come true.
2010: 5.2 percent reduction in greenhouse gas emissions emissions from 1990 levels is achieved by those countries that signed the Kyoto Protocol. 20 percent of California's electricity comes from renewables. Toyota releases a plug-in hybrid electric vehicle.
2018: 100 percent of U.S. electricity comes from solar, wind and other renewables (Gore's prediction). $255 billion spent per year (more than four times what is currently spent) on biofuels, wind power, solar photovoltaics, and hydrogen fuel cells. $150 billion invested by this date by the U.S. government on climate-friendly energy development (Obama's plan).
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