Reports about the ozone layer are as maddeningly variable as the protective shield itself. Estimates of the problem's severity fluctuate virtually with each new set of measurements from the atmosphere. Unfortunately, the estimates do seem to possess one common thread: they are getting worse. Last week's announcement from the Environmental Protection Agency that the shield may be | disappearing nearly twice as fast in northern latitudes as many scientists had predicted is the most alarming report to date. The study noted that the loss was occurring both farther south, over the most populous regions of the U.S., and later in the...
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