FuelFix: When President Barack Obama unveils his broad plan for combating climate change on Tuesday, he is expected to tout new rules to clamp down on greenhouse gas emissions from existing power plants.
The change would take aim at one of the biggest single sources of carbon emissions in the United States by going after existing power plants that produce 40 percent of the nation`s greenhouse gas pollution from burning coal and other fossil fuels.
But analysts on Monday noted that despite the White...