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 ...

Ozone is a gas found in the Earth’s atmosphere ... The tool gives an immediate color-coded indication of air quality and can also be used to help avoid fine particle pollution as well.

The recording was made on 15 September and Claus Zehner the agency's mission manager admitted it was of the biggest ozone holes they've ever seen. “The satellite measured trace gases in the ...