Environment: Aerosol Link

Exploring the ozone loss

When the Government cracked down on the use of chemicals called chlorofluorocarbons in aerosol sprays three years ago, a major row erupted. Some scientists welcomed the ban, contending that the synthetic compounds—like Freon —were destroying the earth's ozone layer, a shield against the sun's ultraviolet rays. They warned that loss of ozone could cause more cancer and perhaps alter the weather. Other scientists pooh-poohed such doomsday scenarios as unproved.

Last week the controversy was revived when Donald Heath, a physicist at NASA's Goddard Space Flight Center, reported actual evidence...

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