Antarctic Ozone Hole Leveling Off
I read a nice article (not sure if was on slashdot), that banning chlorine will be more damagin in the long run.
Because chlorine is an industrial by-product of many different chemical processes, it has to get gotten rid of somehow. Thus chlorine gas in warfare, cfc's in spray cans, pvc plastics - it's cheap!
So now the chlorine has to get bound in other materials and will pose an environmental threat some hundreds pf years later.
Maybe we should take a look at the processes having chlorine as a waste product and try and do them more environmentally-friendly