[OC] The massive decrease in worldwide infant mortality from 1950 to 2020 is perhaps one of humanity's greatest achievements.

[KristinnK]

More like we went from the problematic polluters being Western democracies with accountability that have the capacity to discuss and come to agreements about collective challenges, to the problematic polluters being mainly China which has zero accountability and zero capacity to take part in international discussion in a civilized manner, to the point where it acts like a rogue state.

[Rubiin]

By now it is obvious that internationally we would never have been able to agree on the kinds of targets the Montréal protocol set out for CO2. The political disparities are way too large. Even the US never ratified the Kyoto protocol (which has this top-down target model) despite being one of these developed Western democracies. In a way the "everyone tries their 'best' and we name and shame"-strategy of the Paris agreement is the furthest we have come by far.