Ozone Layer (E)
The earth's protective ozone layer had been thinning since the late 1970s. Scientists raised the alarm and ozone-depleting chemicals were phased out worldwide. According to the United Nations Scientific Assessment Report (UNSAR) released last year, these efforts have shown results and the ozone layer is finally healing. However, the use of hydrofluorocarbons or HFCs as refrigerants and coolants in refrigerators and air conditioners has been a significant concern lately. HCFC 22 and has a global warming potential that is thousands of times more than of carbon dioxide. What more needs to be done in saving the ozone layer? Watch this show to know more.