Environmental Research Foundation . . P.O. Box 5036, Annapolis, MD 21403 . .
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To subscribe, E-mail the words . . The decline of frog populations world-wide has stirred dispute in the media. Like other environmental problems beset with uncertainties, the simultaneous disappearance of frog populations from every continent offers the media a vehicle for venting philosophical views, environmental and anti-environmental. Many chemicals, but chiefly DuPont's chlorofluorocarbons, diminish Earth's ozone shield, allowing increased ultraviolet light to strike the Earth. Rensberger responded with a theory of his own.