It's being fixed.
The Montreal Protocol, restricting production and use of chlorofluorocarbons (CFCs), was passed in the 1980s.
Since it went into effect the ozone hole has stopped growing and is starting to shrink.
It's the most successful international environmental agreement ever. We need something like it (Kyoto isn't working) for global warming.
More here:
http://www.theozonehole.com/montreal.htm
http://www.theozonehole.com
2007-04-11 03:58:52
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answer #1
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answered by Bob 7
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It was always a natural phenomena and perfectly normal. The holes only happen at the poles and at the exact time every year ,do u think the CFC just wander around and sudden rush to the south pole to eat a hole in the ozone layer ,doesn't that set off some alarm bells. The ozone layer is very high and is caused when the solar winds collide with the earth's magnetic field the CFC can not get that high .
2007-04-11 10:53:51
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answer #2
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answered by JOHNNIE B 7
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Dramatic loss of ozone in the lower stratosphere over Antarctica was first noticed in the 1970s by a research group from the British Antarctic Survey (BAS) who were monitoring the atmosphere above Antarctica.
The Ozone Hole often gets confused in the popular press and by the general public with the problem of global warming. Whilst there is a connection because ozone contributes to the greenhouse effect, the Ozone Hole is a separate issue. However it is another stark reminder of the effect of man's activities on the environment.
Over Antarctica (and recently over the Arctic), stratospheric ozone has been depleted over the last 15 years at certain times of the year. This is mainly due to the release of manmade chemicals containing chlorine such as CFC's (ChloroFluoroCarbons), but also compounds containing bromine, other related halogen compounds and also nitrogen oxides (NOx). CFC's are a common industrial product, used in refrigeration systems, air conditioners, aerosols, solvents and in the production of some types of packaging. Nitrogen oxides are a by-product of combustion processes, eg aircraft emissions.
What Is Being Done?
The first global agreement to restrict CFCs came with the signing of the Montreal Protocol in 1987 ultimately aiming to reduce them by half by the year 2000. Two revisions of this agreement have been made in the light of advances in scientific understanding, the latest being in 1992. Agreement has been reached on the control of industrial production of many halocarbons until the year 2030. The main CFCs will not be produced by any of the signatories after the end of 1995, except for a limited amount for essential uses, such as for medical sprays.
The countries of the European Community have adopted even stricter measures than are required under the Montreal Protocol agreements. Recognising their responsibility to the global environment they have agreed to halt production of the main CFCs from the beginning of 1995. Tighter deadlines for use of the other ozone-depleting compounds are also being adopted.
It was anticipated that these limitations would lead to a recovery of the ozone layer within 50 years of 2000; the World Meteorological Organisation estimated 2045 (WMO reports #25, #37), but recent investigations suggest the problem is perhaps on a much larger scale than anticipated.
Fixing the problem
In 1979, many countries, including the U.S., banned CFCs from being made or used. This was a big step toward fixing the problem. Today, no spray cans contain CFCs. Other chemicals are gradually replacing the CFCs in air conditioners.
But the CFCs already in the atmosphere can take up to 50 years to reach the stratosphere. Once there, they hang around in the stratosphere for many years, doing damage.
Also, the products that still contain CFCs need to be treated with care. One example of this is a car air conditioner. When the air conditioner breaks, or the car is taken to a junkyard, the CFCs need to be carefully taken out and recycled or stored so that they don’t leak into the air.
The future
Scientists originally predicted that the ozone layer would be the thinnest around 2008, then start recovering. But new research shows that other air pollution problems are slowing down the ozone layer’s ability to rebound
2007-04-11 08:55:20
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answer #3
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answered by Curly 4
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Ozone generators.
2007-04-11 08:40:16
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answer #4
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answered by Anonymous
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According to NASA the hole closed a few years ago. What are your ideas on how to avert this horrible catastrophe that could wipe out humanity in the next few days?
2007-04-11 08:38:24
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answer #5
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answered by jack_scar_action_hero 3
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no it can;t but it can only be stopped from enlarging.
the ozone layer is allergic to smoke but we can't tel up to more than 8billion people in the world to stop doing anything that includes smoke.
i'm sorrry it cannot be fixed
2007-04-11 08:37:35
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answer #6
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answered by supercuelsassy 1
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We can use super size rolls of Saran Wrap, model car glue, and sausage gravy to patch up the holes.
2007-04-11 08:39:02
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answer #7
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answered by shaggy_g 3
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It's already going away. It's been shrinking for years. Find something else to worry about.
2007-04-11 08:34:06
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answer #8
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answered by Gene 7
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