When were CFC's banned?

Question

What year were CFC's banned?

Answer 1

Ban was signed in 1987 and went into effect in 1989.   Biggest ozone hole has been was in..... September 2006.....

http://en.wikipedia.org/wiki/CFC_ban

Answer 2

were they ever banned?  i thought that air conditioners and refrigerators and a bunch of other stuff produce them

Answer 3

CFC's for the use as aerosol propellants have been banned since 1978 in the US.

But they are still in use as refrigerants, and other industrial uses.  There is a phase out in process for these uses (starting with the Montreal Protocol in 1987), but the phase out has been changed over the years.  So it gets complicated.

Do a web search on "montreal protocol" or "CFC refrigerant phase out" or "CFC aerosol ban" for more details on various aspects of CFC reduction efforts.

Good luck.

Answer 4

They were banned in 1987 to prevent "damage to the ozone layer".  However, as was seen with the DDT ban in the late 1960's, the results did not confirm the "chicken little" approach.

The hole in the ozone layer is a cylcic phenomenon which occilates over time -- some years bigger and some years smaller.  The ban of the CFC's didn't change this as the hole in 2006 was one of the biggest ever!

DDT was banned to protect Eagle's eggs, but in the meantime millions of people have died from malaria because they could not use DDT to kill the mosquitoes which spread the disease.  And now, science is showing that DDT was not really the cause.  

go figure.

Answer 5

what people don't understand is that (to answer your question, 1987 mainly because of hairsprays) humans NEVER CREATED A HOLE IN THE OZONE LAYER.  since Earth's creation, there has always been a hole in the ozone layer.  In one season, the hole will be at the south pole, and another season, at the north pole.  basically, it fluctuates.



what humans have REALLY done is make it BIGGER.  we NEVER created it. without the hole, the Earth would freeze up.  yes, humans' enlarging it has contributed to the whole "global warming" theory, but we NEVER created it.

personally, i don't believe in "global warming".  since the Earth was created, at the beginning of each ice age the earth has ever encountered, temperatures spiked to record highs, then dropped tremendously. the most recent ice age started about 700 - 800 years ago and ended around 300 years ago, known as the "Little Ice Age".  That's what the black plague and the Dark Ages were really caused by.  European farmers were thriving, and when the Little Ice Age hit, their crops died, causing mass famine.

simply put, CFCs did contribute to the destruction of our planet, but didn't start it. the Earth is simply on the brink of another Ice age, which will probably start within the next 100 to 200 years.