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Articles on Ozone layer

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Cape Town residents queueing to refill water containers at the Newlands Brewery Spring Water Point in January 2018. GettyImages

Dimming the sun could reduce future drought risk in Cape Town – but there’s a catch

Artificially dimming the sun, by injecting reflective particles into the upper atmosphere, could reduce the risk of Day Zero level droughts in Cape Town by more than 90% in the future.
Molina speaking about climate change at the Guadalajara International Book Fair in Mexico, Nov. 2018. Leonardo Alvarez/Getty Images

Remembering Mario Molina, Nobel Prize-winning chemist who pushed Mexico on clean energy – and, recently, face masks

Molina, who died on Oct. 8, ‘thought climate change was the biggest problem in the world long before most people did.’ His research on man-made depletion of the ozone layer won the 1995 Nobel Prize.
Temperatures are warming faster in the Arctic than anywhere else in the world. Water and sewer pipes in Iqaluit, Nunavut, are cracking during the winter as the ground shifts. THE CANADIAN PRESS/Sean Kilpatrick

The unexpected link between the ozone hole and Arctic warming

New research finds that chlorofluorocarbons (CFCs) and other ozone-depleting substances have boosted the effects of climate change in the Arctic.
False-color image of ozone concentrations above Antarctica on Oct. 2, 2015. NASA/Goddard Space Flight Center

Is Earth’s ozone layer still at risk? 5 questions answered

Earth’s ozone layer shields us from harmful ultraviolet radiation. Nations have been working to reduce ozone-depleting chemicals since the 1980s, but recent studies show that there is still work to do.
Suspected infestation of Macrophomina phaseolina, a “novel” soil pathogen, in the non-fumigated buffer zone of a strawberry field. Julie Guthman

Healthy to eat, unhealthy to grow: Strawberries embody the contradictions of California agriculture

California produces 90 percent of the US strawberry crop, but growers face curbs on toxic chemicals that have helped their industry expand. Can a system centered on mass production become more sustainable?
Clouds over Australia’s Davis Research Station, containing ice particles that activate ozone-depleting chemicals, triggering the annual ozone hole. Barry Becker/BOM/AAD

After 30 years of the Montreal Protocol, the ozone layer is gradually healing

The treaty to limit the destruction of the ozone layer is hailed as the most successful environmental agreement of all time. Three decades on, the ozone layer is slowly but surely returning to health.
These clouds – formed high in the Antarctic atmosphere during spring – provide a place where ozone-destroying chemicals can form. sandwich/Flickr

Ozone hole closing for the year, but full recovery is decades away

Imagine an environmental crisis caused by a colourless, odourless gas, in minute concentrations, building up in the atmosphere. There is no expert consensus, but in the face of considerable uncertainty…
Antarctica has actually been protected from sea ice melt by the ozone hole. Vassil Tzvetanov

The ozone hole leaves a lasting impression on southern climate

Many people think of sunburn and skin cancer when they hear about the ozone hole. But more ultraviolet (UV) radiation isn’t the only problem. The ozone hole has also led to dramatic changes in Southern…
In 2012 and 2013 parts of New Zealand suffered the worst drought in 70 years. Dave Young/Flickr

New Zealand is drying out, and here’s why

Over 2012 and 2013, parts of New Zealand experienced their worst drought in nearly 70 years. Drought is the costliest climate extreme in New Zealand; the 2012-2013 event depressed the country’s GDP by…

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