The damage caused by chlorofluorocarbons (CFCs) came to light in the 1980s when scientists discovered a huge hole in the ozone layer.
Since the ban on CFCs came into effect, the ozone layer has been recovering, but only very slowly. CFCs released from aerosol cans, refrigerators and air conditioning systems continue to damage layers of the stratosphere decades after their release.
Reuters - Innovations Video Online (Nov. 21, 2014) Cancer experts in Chile are warning people limit their exposure to the sun as dangerously high levels of ultraviolet radiation are expected over the next few months. A recently released report ... watch video
Newsy (July 3, 2016) A new study shows the hole in the ozone layer is shrinking, thanks in large part to the Montreal Protocol, which sought to curb harmful chemicals.
Video provided by ... watch video
Reuters (Oct. 23, 2013) Engineering students in Gaza have designed a prototype ozone gas generator to sterilise hospital rooms, a difficult task in a country living with economic sanctions imposed by the surrounding state ... watch video
AP (July 28, 2016) Researchers are exploring a blue hole in the waters of the Paracel Islands in the South China Sea. Data obtained by an underwater robot showed the hole is about 984 feet deep, making it the deepest ... watch video
Newsy (Sep. 11, 2014) The Ozone layer is recovering thickness! Hooray! But in helping its recovery, we may have also helped put more greenhouse gases out there. Hooray?
Video provided by ... watch video
Aug. 31, 2016 One of the first efforts to systematically assess how cities are preparing for climate change shows that city planners have yet to fully assess their vulnerability to climate change, leaving serious ... read more
Aug. 30, 2016 Because forest elephants are one the slowest reproducing mammals in the world, it will take almost a century for them to recover from the intense poaching they have suffered since ... read more
Aug. 29, 2016 A team of researchers has developed a new solar cell that combines two different layers of sunlight-absorbing material to harvest a broader range of the sun's energy and that ... read more
Aug. 30, 2016 Closing the high seas to fishing could increase fish catches in coastal waters by 10 percent, helping people, especially the most vulnerable, cope with the expected losses of fish due to climate ... read more
Aug. 30, 2016 Researchers have used 'environmental DNA' to determine the biodiversity of a river. Previously, this involved collecting and identifying all the organisms living in it. Using ... read more
June 3, 2014 Two new chlorofluorocarbons (CFCs) and one new hydrochlorofluorocarbon (HCFC) have been found in the atmosphere by a group of scientists. Scientists made the discovery by comparing today's air ... read more
Apr. 14, 2014 Since the discovery of the Antarctic ozone hole, scientists, policymakers, and the public have wondered whether we might someday see a similarly extreme depletion of ozone over the Arctic. But a new ... read more
Mar. 9, 2014 Scientists at the University of East Anglia have identified four new human-made gases in the atmosphere -- all of which are contributing to the destruction of the ozone layer. New research reveals ... read more
Jan. 19, 2012 Extraordinarily cold temperatures in the winter of 2010/2011 caused the most massive destruction of the ozone layer above the Arctic so far: The mechanisms leading to the first ozone hole above the ... read more