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
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
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?
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Reuters (Jan. 8, 2013) A Japanese-led project aims to drill to the Earth's mantle, a 3000 kilometer-thick layer of slowly deforming rock between the crust and the core. In its early stages, the $US1 billion mission would ... watch video
AP (Apr. 3, 2014) Schools have closed their playgrounds and ambulance staff are reporting a surge in breathing problems as smog blankets parts of England for a second day. Northern Germany was also affected with a ... watch video
June 30, 2015 A new recycling method recovers valuable rare-earth magnetic material from manufacturing waste. The process, which inexpensively processes and directly reuses samarium-cobalt ... read more
June 30, 2015 Parts of the western Solomon Islands, a region thought to be free of large earthquakes until an 8.1 magnitude quake devastated the area in 2007, have a long history of big ... read more
July 2, 2015 Geologists have seen ridges and valleys form in real time and -- even though the work was a fast-forwarded operation done in a laboratory setting -- they now have an idea of ... 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
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
Sep. 2, 2010 A new discovery could make it possible in future to identify the source of banned CFCs that are probably still being released into the atmosphere. They have also discovered the largest chlorine ... read more