The ozone layer is starting to show signs that it is recovering.
http://www.bbc.co.uk/news/science-environment-29152028
The facts are that man is having an effect on the environment.
Some may deny this, and just use some limited metrics of global warming to measure the effects made by man. Surely the ozone layer is proof of that man is having effects on the environment .
I gave up on the ozone issue.
One year the ozone layer closes up quite nicely, only to open up the following year.
Nobody could so far explain to me in laymen's terms why the ozone layer opens up over Antarctica and surrounding area, while the ozone layer stays perfectly intact in the northern hemisphere despite the fact that all the ozone unfriendly compounds are released in the northern hemisphere.
Volcanoes have shown that gasses that are released in the northern hemisphere in general remains in this area.