December 4, 2017: The Sierra Club, together with a number of environmental justice, public health, environmental allies, commenced a lawsuit against the U.S. Environmental Protection Agency (EPA) over the Agency’s failure to protect public health by declining to designate the areas of the country that are not meeting EPA’s health-based smog air quality standard. The Sierra Club is represented in the litigation by Earthjustice, with co-plaintiffs American Lung Association, American Public Health Association, American Thoracic Society, Appalachian Mountain Club, Environmental Defense Fund, Environmental Law and Policy Center, National Parks Conservation Association, Natural Resources Defense Council, and West Harlem Environmental Action. Read more here.