To: cogitator
But the decline was actually measured beginning ten years before this date?
99 posted on
02/17/2004 8:49:42 AM PST by
Robert A Cook PE
(I can only support FR by donating monthly, but ABBCNNBCBS continue to lie every day!)
To: Robert A. Cook, PE
But the decline was actually measured beginning ten years before this date?10-15 years; most sites say that the decline in ozone levels and the first indications of the hole over Antarctica occurred during the mid-1970s. I don't know when CFC production and usage began in earnest; late 1950s?
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