events
The Montreal Protocol is signed to protect the ozone layer from depletion.
Related Wikipedia articles
Montreal Protocol
1987 treaty to protect the ozone layer
The Montreal Protocol on Substances That Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987, and entered into…Source: Wikipedia (CC BY-SA)
Ozone depletion
Atmospheric phenomenon
Ozone depletion consists of two related events observed since the late 1970s: a lowered total amount of ozone in Earth's upper atmosphere, and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone…Source: Wikipedia (CC BY-SA)