What is a key reason the Montreal Protocol is seen as successful?

The Montreal Protocol is viewed as a success primarily because it effectively halted the depletion of the ozone layer. This international treaty, which was adopted in 1987, aimed to phase out substances that deplete the ozone layer, notably chlorofluorocarbons (CFCs). The protocol brought together countries around the world to take collective action against the use of these harmful chemicals, which were primarily responsible for ozone layer degradation.

The success of the Montreal Protocol is evident in its rapid adoption and commitment by nearly all countries, as well as the significant recovery observed in the ozone layer as a result of the phasedown of CFCs and other ozone-depleting substances. Studies have shown that if the protocol had not been enacted, the depletion of the ozone layer would have continued, leading to severe consequences for both human health and the environment.

While addressing climate change is vital, the Montreal Protocol's specific focus was on protecting the ozone layer rather than being a comprehensive climate agreement. Implementation involved various challenges and complexities, which, while manageable, were not necessarily easy, highlighting the dedication required by participating nations. Additionally, the treaty's focus was not solely on carbon emissions, as it specifically targeted a different set of chemical substances. Thus, the treaty's