climate deniers now extremists . really ?, page-19

Well rab,
I usually am happily hopping along with you.
Though on this one, we need to tip our hats to Science and
remind ourselves of the causes which were alarming.

The cause was a range of refrigirant gases which were pinpointed
as culprits in Earth's ozone hole.
An IMMEDIATE prohibition of the use of those CFC gas agents was issued some 30 years ago,
resulting in a real "We saved the World" outcome.

"These concerns led to the adoption of the Montreal Protocol in 1987, which bans
the production of CFCs, halons and other ozone-depleting chemicals.
The ban came into effect in 1989. Ozone levels stabilized by the mid-1990s and began to recover in the 2000s.
Ozone depletion - Wikipedia

https://en.wikipedia.org › wiki › Ozone_depletion "

Cheers,