China cracks down on ozone layer harming gas as scientists find tangible drop in emissions

CFC-11 was outlawed a decade ago under the Montreal Protocol when research revealed its effects on the ozone, along with the effects of similar widely used chemicals.

from http://www.firstpost.com/tech/science/china-cracks-down-on-ozone-layer-harming-gas-as-scientists-find-tangible-drop-in-emissions-9322211.html