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CFCs

Since 2002, scientific data pointed to a slower decline of CFC-11, one of several chemical substances banned by the Montreal Protocol in 1987. The amount of CFC-11 found in the atmosphere has actually gone up during that time, prompting the United Nations

Scientists detected a spike in ozone-depleting chemicals. They’ll use the Montreal Protocol to stop the pollution.

Environment

Those who have watched over the Montreal Protocol since its formation have never had to take significant measures to enforce it — until now.

This image is from a video made in 2011 that compiled visualizations of the Antarctic ozone hole. Recent findings have shown that the hole is filling up — while other parts of ozone remain on the decline.

The ozone hole over the Antarctic is beginning to fill up. Here’s the bad news.

Science
Kerry Kigali agreement

International negotiators reach historic agreement to phase out powerful greenhouse gases

Environment