Researchers say that they have pinpointed the major sources of a mysterious recent rise in a dangerous, ozone-destroying chemical. CFC-11 was primarily used for home insulation but global ...

CFCs and similar compounds are mostly inert (nonreactive ... Sunlight cooks the polluting chemicals in the air, catalyzing chemical reactions that make ozone. Smog levels tend to be highest in the ...

A new study published in the journal Atmospheric Chemistry and Physics reveals a 17-year delay in the projected recovery of ...

But the longer the hole persists, the greater the likelihood that the ozone layer is dominated by natural factors, not human CFC emissions.” Another year has passed, and that stubborn Ozone Hole over ...

These on-site measurements allowed researchers to test Crutzen's theory that CFCs were driving ozone depletion through ...

Chlorofluorocarbons, along with other chlorine- and bromine-containing compounds, have been implicated in the accelerated depletion of ozone in the Earth's stratosphere. CFCs were developed in the ...

In 1974, Mario Molina and Sherwood Rowland published a paper in Nature detailing the effects of chlorofluorocarbon (CFC) gasses on atmospheric ozone. The paper pointed out that CFCs, which were ...

The improvement is due to a combination of continuing declines in harmful chlorofluorocarbon (CFC) chemicals, along with an unexpected infusion of ozone carried by air currents from north of the ...

A 1987 ban on CFCs helped slow the process ... triggering a chemical reaction that's highly destructive to the ozone. The study, published last week in the peer-reviewed Geophysical Research ...

The ozone hole above Antarctica has been remarkably massive and long-lived over the past four years and chlorofluorocarbons (CFCs) are not the only things to blame, said researchers in their study ...

A wide variety of man-made chemicals, primarily CFCs, can break down ozone ... suspected to be due to similar reactions that create ozone pollution at ground level. However, from April to December ...

The ozone hole over Antarctica is the seventh smallest it’s been since the early 1990s. Recovery began with the Montreal Protocol, which ended the production of all chlorofluorocarbons (CFCs ...