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 ...

Because CFCs are so stable near the ground, it took decades before scientists started seeing signs of this ozone problem higher in the atmosphere. It wasn't until the 1970s that chemists learned that ...

Read more: How Long Does It Take ... of Earth's ozone layer. Initially utilized for their stability and nontoxic properties, CFCs were found to float up and eventually break down under ultraviolet ...

However, it took many decades for scientists to discover that when CFCs break down in the atmosphere, they release chlorine atoms that are able to rapidly destroy ozone molecules. Ozone hole ...

A wide variety of man-made chemicals, primarily CFCs, can break down ozone molecules, and have led to the commonly-known hole in the ozone layer which is still present to this day. Due to the ...

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 ...

But “altogether, our findings reveal the recent, large ozone holes may not be caused just by CFCs,” she added. The analysis excluded data from the years 2002 and 2019, when “sudden break-ups ...