'Laughing Gas' Biggest Ozone-Destroye... - Bloomberg

The Tech Herald'Laughing Gas' Biggest Ozone-Destroyer After Phase-Out of CFCsBloomberg... gas used by dentists to pacify anxious patients, is putting stress on the environment and is now the biggest man-made destroyer of the ozone layer. ...Nitrous oxide key ozone destroyerChemistry WorldNew Culprit Seen in Ozone DepletionNew York TimesNOAA study shows nitrous oxide now top ozone-depleting emissionXinhuaIndopia -Thaindian.com -Net News Dailyall 88 news articles »