Thanks to a heightened worldwide concern about the fragility of the earth's ecology, environmental issues seem to come up more and more frequently as matters of public policy. But even by current standards, last week was remarkable for progress made on a number of important actions and proposals -- even if all parties to the various disputes could not claim total victory. Among the week's events:
-- Nearly 100 nations agreed on a ten-year plan to end worldwide production of chlorofluorocarbons (CFCs) and other chemicals that threaten the earth's protective ozone layer.
-- President Bush placed a moratorium on further oil...