On climate change, the consequences of the president being wrong are hard to imagine

Three Republican EPA administrators: Trump is putting us on a dangerous path

By William D. Ruckelshaus, Lee M. Thomas and William K. Reilly
Washington Post, May 26

William D. Ruckelshaus was administrator of the Environmental Protection Agency from 1970 to 1973 and 1983 to 1985. Lee M. Thomas was EPA administrator from 1985 to 1989, and William K. Reilly was EPA administrator from 1989 to 1993.

More than 30 years ago, the world was faced with a serious environmental threat, one that respected no boundaries. A hole in the ozone layer was linked to potential increases in skin cancer and blindness from cataracts. The ozone layer is a thin band of gas in the stratosphere that protects the Earth and humans from dangerous ultraviolet radiation from the sun, and it was slowly being destroyed by chlorofluorocarbons, or CFCs, which are man-made gases used as aerosol propellants and in refrigeration and cooling.

Despite early skepticism, the risk of a thinning ozone layer was such that an international U.N. conference was convened in Vienna to address this problem. The participating countries and international bodies, including the United States, the European Union and other major producers and users of CFCs, afterward met in Montreal to negotiate an agreement setting out a specific program to reduce the production and use of CFCs.

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