Human Impact Carbon Dioxide Fossil Fuels Impact of Emissions CO2 Emissions Sea Surface Temperatures Carbon Emissions Temperature Trends Environmental Impact Carbon Dioxide Levels Emissions Gap Antarctica Health Impacts Atmospheric Conditions Public Health Ocean Acidification Global Warming Atmospheric Chemistry Atmospheric Measurements Emission Reduction Environmental Impact Studies Temperature Rise Methane Hydrates Emissions Methane Weather Patterns Emissions Sources Ozone as a Greenhouse Gas Emissions Targets Climate Monitoring Emission Scenarios Impact on Climate Global Temperatures
A D.C. Circuit challenge by environmental and health groups now tests the administration’s bid to limit EPA climate authority under the Clean Air Act.