| |
 |
 |
|  | Ozone Limit Changes Only Rise So High | 2017 |
|  | Methane Rule Survives Repeal Attempts by Republican Majority | 2017 |
|  | Environmental Agency Tightens Clean Air Rules | 1997 |
|  | Environmental Legislation Highlights Coastal Zones, Waste Management, and Antarctica Protections | 1996 |
|  | Senate Sought To Reduce Indoor Air Pollution | 1991 |
|  | Clean Air Act Rewritten, Tightened | 1990 |
|  | Clean-Air Bill Moves in Both Chambers | 1989 |
|  | Clean-Air Bill Fails to Move | 1988 |
|  | House Sets Stage for Clean-Air Debate in 1988 | 1987 |
|  | Clean Air Bill Stalled by Acid Rain Dispute | 1984 |
|  | No Action on Clean Air Bill | 1983 |
|  | Congress Fails to Act on Clean Air Rewrite | 1982 |
|  | Congress Begins Rewrite of Clean Air Act | 1981 |
|  | Commission on Air Quality | 1981 |
|  | Major Clean Air Amendments Enacted | 1977 |
|  | Clean Air Amendments Die at Session's Close | 1976 |
|  | Ozone-Aerosol Issue | 1975 |
|  | Congress Faces Hard Choices On Clean Air Act | 1975 |
|  | Congress Votes to Delay Clean Air Standards | 1974 |
|  | Clean Air Standards Relaxed | 1973 |
|  | Auto Pollution Control Deadline Postponed | 1973 |
|  | Clear Air Act Probe: Political Mileage for Eagleton | 1972 |
|  | Low-Emission Vehicles | 1970 |
|  | Clean Air Bill Cleared with Auto Emission Deadline | 1970 |
|  | Air Quality Act Amendments | 1969 |
|  | Message to Congress: Johnson on Pollution, Resources, Road Safety | 1967 |
|  | Johnson Memorandum on Air Pollution | 1967 |
|  | Congress Strengthens Air Pollution Control Powers | 1967 |
|  | Air Pollution Control | 1966 |
|  | Auto Pollution, Waste Disposal Act Passed | 1965 |
|  | Congress Enacts New Air Pollution Law | 1963 |
|  | Air Pollution Control | 1962 |