On This Day In Chemistry

September 16th

The Montreal Protocol on Substances that Deplete the Ozone Layer was signed by world leaders on this day in 1987

The treaty agreed that the production and consumption of compounds that depleted ozone (O3) in the stratosphere, such as chlorofluorocarbons (CFCs), were to be phased out. The ozone layer is expected to recover by 2050 if agreements are kept.
 

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