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April 23, 1993 | MAURA DOLAN, TIMES ENVIRONMENTAL WRITER
In yet another ominous portent for the ozone layer, government scientists report today that the stratospheric shield that protects life from harmful ultraviolet radiation has plummeted to unexpected new lows over the Northern Hemisphere, including the United States. The researchers, who reported their findings in today's issue of Science, said the 1991 eruption of Mt.
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NEWS
April 23, 1993 | MAURA DOLAN, TIMES ENVIRONMENTAL WRITER
In yet another ominous portent for the ozone layer, government scientists report today that the stratospheric shield that protects life from harmful ultraviolet radiation has plummeted to unexpected new lows over the Northern Hemisphere, including the United States. The researchers, who reported their findings in today's issue of Science, said the 1991 eruption of Mt.
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