"We want our kids to grow up in an America... that isn't threatened by the destructive power of a warming planet." That was Obama in his acceptance speech last night. Now here's what he plans to do about it in his second term.
A look at how the U.S. power sector has evolved over time. Coal and nuclear power used to dominate the landscape. But lately, natural gas and renewables make up the vast majority of new power plants being built.
Carbon emissions in the United States are at their lowest level in 20 years. And analysts tend to credit the flood of natural gas that's displaced coal. Yet many environmentalists have pointed out that natural gas may not be as much of a climate boon as advertised. So here's a primer on whether natural gas can help us reduce carbon emissions and tackle global warming.