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?
Video provided by ... watch video
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 29, 2015 Trees that can tolerate soil pollution are also better at defending themselves against pests and pathogens. 'It looks like the very act of tolerating chemical pollution may ... read more
June 30, 2015 A new discovery in the study of fault slip seeks to redefine our understanding of how melt-bearing faults behave, say scientists. Fault slip occurs in many natural environments -- including during ... read more
June 30, 2015 The amount of water required to hydraulically fracture oil and gas wells varies widely across the country, according to the first national-scale analysis and map of hydraulic ... read more
June 30, 2015 From the founding of America, the Fourth of July has been synonymous with fireworks. A new study quantifies the surge in fine particulate matter -- particles that are two and ... read more
June 30, 2015 Using the nation's weather radar network, two doctoral students have developed a technique for forecasting something other than the weather: the orientation behavior of birds as they migrate through ... 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