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It's Not Disappearing.In 1992 President Bush called for the production of chlorofluorocarbons CFC's (such as well known refrigerants called Freons and the fire extinguisher gasses known as halons) to be halted (the Montreal-London Protocol) in 1995. Scientists believed that CFC's were causing the hole.

1. The hole was first discovered in 1956, before CFC's came into existence.

The scientist who first discovered the "hole" was Dr. Gordon Dobson, he concluded that it was a natural phenomenon that appeared annually near the end of winter, and the hole vanished suddenly with the onset of spring

2. The "hole" is not a hole.

The ozone "hole" is actually a thinning of the ozone in the ayer. The lowest ozone concentration ever recorded in the "hole" was 30% of the normal level.

3. Worldwide ozone layers are actually increasing.

Average ozone levels are higher right now than they were in 1962, even though CFC use reached a maximum in 1974.

4. The worst-case ozone depletion scenarios of the environmentalists due to changes in the weather, solar activity, and latitude.

The (global disaster" that the environmentalist predicted was a decrease in average ozone levels by less then 10% in the next 100 years

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14y ago

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