“Our success in phasing out ozone-eating chemicals shows us what can and must be done—as a matter of urgency—to transition away from fossil fuels, reduce greenhouse gases, and so limit temperature increase,” said one expert.

By Jessica Corbett  Published 1-9-2023 by Common Dreams

From the Pittsburgh Earth Day Climate Strike on 4/22/2022. Photo: Mark Dixon/flickr/CC

An assessment released Monday by leading science agencies highlights the effectiveness of an international treaty intended to protect the stratospheric ozone layer as well as the power of taking action now to limit global heating driven by human activity.

The Montreal Protocol on Substances That Deplete the Ozone Layer was signed in 1987 and entered into force in 1989. The landmark treaty regulates nearly 100 synthetic chemicals known as ozone-depleting substances (ODSs)—including chlorofluorocarbons (CFCs) used in air conditioners and refrigerators. Continue reading →