Canada

03 ozone graphic

46 countries sign the Montreal Protocol in historic move to restore 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 force on 1 January 1989. The ozone treaty has since been ratified by 198 parties, making it the first universally ratified treaty in United Nations history.

46 countries sign the Montreal Protocol in historic move to restore the ozone layer Read more