yarndy's video: THREAT TO EARTH S OZONE LAYER: Scientists Findings Are Frightening-A Big Deal -July 1 2017

WE MUST act to prevent undoing over 30 years of science and policy work which has undoubtedly saved many lives,” scientists are warning. The increasing threat to stratospheric ozone from dichloromethane. Earth's protective ozone layer, on a slow path to recovery since the 1987 Montreal Protocol banned chemicals that erode it, may be in danger anew, scientists have warned. The layer sits in the stratosphere at 10 to 50 kilometres above the Earth’s surface, where it filters out harmful ultraviolet light that can cause cancer and damage crops. The Montreal accord phased out production of chlorofluorocarbons (CFCs) in refrigerators, aerosols, airconditioners and foam insulation when it was discovered they were responsible for the so-called ozone “hole”. The new study sought to quantify the harm threatened by dichloromethane, which is used as a solvent in paint strippers and as a degreaser, and also to decaffeinate coffee. The researchers found that dichloromethane levels in the stratosphere have nearly doubled since 2004. Further growth could delay the ozone recovery over Antarctica, where the depletion was most severe, by more than a decade. *Link to news.com.au article: http://www.news.com.au/technology/environment/chemicals-damaging-the-ozone-layer-have-nearly-doubled-since-2004/news-story/2e19ef161a5c4f509f25552900ddc882 *Link to science mag article : http://www.sciencemag.org/news/2017/06/new-threat-ozone-layer-found *Link to NOAA article: http://research.noaa.gov/News/NewsArchive/LatestNews/TabId/684/ArtMID/1768/ArticleID/12202/Possible-new-threat-to-Earth%E2%80%99s-ozone-layer.aspx *Link to nature communications article: https://www.nature.com/articles/ncomms15962 *Link to wocit news channel video: https://www.youtube.com/watch?v=dUMRFDRl_ok *Link to wikipedia on Ozone depletion: https://en.wikipedia.org/wiki/Ozone_depletion *More Videos: https://www.youtube.com/user/yarndy/videos ***PLEASE SUBSCRIBE*** Thanks for watching