In the 1980s it became the one of the first advanced companies in the world to completely abolish harmful CFC gases. Spurred on by the 2015 Paris Agreement, it set a goal of achieving 100% ...

It’s not all bad news for the ozone layer, however. Since the Montreal Protocol outlawed most production of CFC gases that harmed the ozone layer, we’ve seen gradual recovery from earlier ...

This generates stratospheric clouds that destroy the ozone layer by reacting with CFC gases, banned by the 1987 Montreal Protocol. In recent days, the polar vortex has broken up and weakened.

Ozone-depleting substances do more than just gnaw at Earth's protective layer. They're also greenhouse gases, so they contribute to the planet's overall warming by trapping heat, too. And now we ...