Look at this doubters

Again, I am using Portugal's recent success of not using a lot of Fossil Fuels to support Tom Friedman's book, Hot, Flat, and Crowded. And this article from NY Times shows how they managed to succeed that.

Five years ago, the leaders of this sun-scorched, wind-swept nation made a bet: To reduce Portugal’s dependence on imported fossil fuels, they embarked on an array of ambitious renewable energy projects — primarily harnessing the country’s wind and hydropower, but also its sunlight and ocean waves. 
Today, Lisbon’s trendy bars, Porto’s factories and the Algarve’s glamorous resorts are powered substantially by clean energy. Nearly 45 percent of the electricity in Portugal’s grid will come from renewable sources this year, up from 17 percent just five years ago.
Land-based wind power — this year deemed “potentially competitive” with fossil fuels by the International Energy Agency in Paris — has expanded sevenfold in that time. And Portugal expects in 2011 to become the first country to inaugurate a national network of charging stations for electric cars.

 Portugal succeed to use less fossil fuels by using the fuels from the heaven, such as solar, wind, and water power. If Portugal was managed to succeed that, then I think America can succeed in using less fossil fuels as well.