Guardian: Our planets fragile ozone layer is on a path toward full restoration by about 2050. But theres a hitch: the success has hinged largely on replacing ozone-depleting substances with hydrofluorocarbon (HFCs) chemicals we now know are highly damaging to the environment. It is time to reduce these pollutants.
Air conditioning, refrigeration, and insulation often contain factory-made HFCs. They are greenhouse gases that can be hundreds or thousands of times more potent than carbon dioxide in damaging...