This country has recently taken a great interest in air pollution, and the extent of its concern has manifested itself in federal legislation to help abate this growing menace. The most significant legislative attempt to clean up the air is the Clean Air Act of 1970.
Rule 23 Class Action Enforcement of The Clean Air Act of 1970,
U. Rich. L. Rev.
Available at: http://scholarship.richmond.edu/lawreview/vol7/iss3/11