WASHINGTON , D.C.— This Earth Day, the United States had something to celebrate: We’re leading the world in cutting greenhouse gas emissions.
Carbon emissions from the power sector are at 20-year lows, thanks to greater use of natural gas. Ozone levels have dropped 18 percent since 2000.
Aggregate national emissions of six common air pollutants have fallen an average of 63 percent since 1980, according to data from the Environmental Protection Agency (EPA), while our population, energy use and Gross Domestic Product have increased.
