This happened in the 1980"s. The ozone, especially around the polar regions, was being depleted. Ozone protects the earth from UVB rays. These wavelengths cause skin cancer, sunburn, and cataracts, which were projected to increase dramatically as a result of thinning ozone, as well as harming plants and animals.
All air conditioners (home and auto), heat pumps, and refrigerator/freezers had to start using a new refrigerant which did not have CFC's and HCFC's.
We will get past Trump and Pruitt (head of EPA). We will be able to do some more work on the problems of climate change. The current administration will be a small speed bump on progress in the world.
https://www.good.is/articles/montreal-protocol-saved-ozone
The study:
http://onlinelibrary.wiley.com/doi/10.1002/2017GL074388/epdf
About the ozone depletion:
https://en.wikipedia.org/wiki/Ozone_depletion
All air conditioners (home and auto), heat pumps, and refrigerator/freezers had to start using a new refrigerant which did not have CFC's and HCFC's.
Thanks to the Montreal Protocol, a 1989 treaty and global effort to eliminate the use of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), weve successfully repaired the Earths ozone. This legislative win, according to a recent study published in Geophysical Research Letters, had the happy side effect of reducing greenhouse gas emissions and blunting some of the effects of climate change overall.
In the 80s, climate scientists realized CFCs and HCFCs heat-catching chemicals most commonly used as refrigerator coolants were tearing holes in our planets atmosphere. The Montreal Protocol drew upon this evidence to enact laws that would have global repercussions, but it wasnt until this latest study the rest of us learned about the benefits the United States has since incurred.
Head researcher and study writer Lei Hu used the National Oceanic Atmospheric Administrations atmospheric monitoring network to determine that eliminating these pollutants had the same effect as cutting carbon dioxide emissions by 170 million tons each year from 2008 to 2014. Hu and her team further estimated that maintaining the Montreal Protocol could help the U.S. cut an additional 500 million tons of CO2 by 2025 thats about a quarter of the emissions we need to cut in order to fulfill the Paris climate agreement, Gizmodo reports.
...theres plenty of reason to believe we can move forward with or without the fringe group of climate change deniers. By getting more politically engaged, scientists can influence policy for the betterment of us all. Local politicians can uphold their support of the Paris accord. And as individuals, we can all do our part by spreading facts, not fear. Emboldened by the evidence that cooperative agreements actually work, we can only move forward.
We will get past Trump and Pruitt (head of EPA). We will be able to do some more work on the problems of climate change. The current administration will be a small speed bump on progress in the world.
https://www.good.is/articles/montreal-protocol-saved-ozone
The study:
http://onlinelibrary.wiley.com/doi/10.1002/2017GL074388/epdf
About the ozone depletion:
https://en.wikipedia.org/wiki/Ozone_depletion