> California enacts the nation's first law to reduce auto fumes, the chief source of air pollution, 1960.
> Rachel Carson's Silent Spring, the prophetic book that warns the world against pesticides, 1962.
> The Nuclear Test-Ban Treaty, the superpowers' agreement that radioactive fallout must stop, 1962.
> The Water Quality Act commits the Federal Government to clean up U.S. rivers, lakes and streams, 1965.
> The Northeast power failure, symbol of fragile technology, 1965.
> The Santa Barbara oil spill, 1969.
> Insecticide kills some 40 million fish in the Rhine River, 1969.
> The problem of overpopulation is recognized for the first time in...