(AP) Natural Gas the cavalry in global warming fight?

Natural Gas as the alternative to coal? It looks promising.

An unlikely source of energy has emerged to meet international demands that the United States do more to fight global warming: It's cleaner than coal, cheaper than oil and a 90-year supply is under our feet. It's natural gas, the same fossil fuel that was in such short supply a decade ago that it was deemed unreliable. It's now being uncovered at such a rapid pace that its price is near a seven-year low. Long used to heat half the nation's homes, it's becoming the fuel of choice when building new power plants. Someday, it may win wider acceptance as a replacement for gasoline in our cars and trucks. Natural gas' abundance and low price come as governments around the world debate how to curtail carbon dioxide and other pollution that contribute to global warming. ....Coal may still be cheaper, but natural gas emits half as much carbon when burned to generate the same amount electricity. Today, about 27 percent of the nation's carbon dioxide emissions come from coal-fired power plants, which generate 44 percent of the electricity used in the U.S. Just under 25 percent of power comes from burning natural gas, more than double its share a decade ago but still with room to grow. ....Bottom line: this new source of gas supply in Texas, Louisiana, Pennsylvania, North Dakota, New York and other states holds out the promise of as much as 2,000 trillion cubic feet of supplies. It is estimated that the U.S. sits on 83 percent more recoverable natural gas than was thought in 1990. "The question now is how does this change the energy discussion in the U.S. and by how much?" says Daniel Yergin, a Pulitzer Prize winning author and chairman of IHS CERA, an energy consultancy. "This is domestic energy ... it's low carbon, it's low cost and it's abundant. When you add it up, it's revolutionary."

What does Obama think about it?

In June, President Barack Obama lumped natural gas with oil and coal as energy sources the nation must move away from. He touts alternative sources — solar, wind and biofuels derived from corn and other plants. In Congress, the energy debate has focused on finding cleaner coal and saving thousands of mining jobs from West Virginia to Wyoming.

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