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 ...

The stratospheric ozone layer has undergone severe depletion ... Nitrous oxide behaves in a similar way to chlorofluorocarbons (CFCs): it is very stable in the lower atmosphere, where it has ...

As well as the ozone layer, CFC-11 has a warming impact. Researchers estimate that if the use of the chemical continues, it would be the equivalent of CO₂ from 16 coal-fired power stations every ...

Humans have been depleting the ozone layer with chemical products. The unintentional experiment started in the late 1920s, when Thomas Midgley and other industrial chemists began to produce ...

The paper pointed out that CFCs, which were widely used in aerosols, firefighting foams, and refrigerants at the time, accumulated in the stratosphere. Once they reached the ozone layer ...

In 2015, scientists at NASA predicted that the Ozone Hole would be half closed by 2020. That hasn’t happened. Other ...

Since they were outlawed in 1992, CFCs' concentration in the atmosphere has gradually declined, allowing the ozone layer to begin its recovery. A recent study from the Copernicus Atmosphere ...

NASA modelling shows that the hole in the ozone layer would have covered the entire Earth by 2060 if CFC production had not been outlawed by the Montreal Protocol in the 1980s. Credit: NASA ...

The connection between CFCs and the ozone layer Almost five decades ago, three chemists — Mario Molino, Sherwood Rowland, and Paul Crutzen — warned that chlorofluorocarbons (CFCs) pose a ...

Scientists were alarmed in the 1970s at the prospect that CFCs could eat away at atmospheric ozone. By the mid-1980s, the ozone layer had been depleted so much that a broad swath of the Antarctic ...