During the 2021 United Nations Climate Change Conference (COP26) held in Glasgow, which of the following commitments was a central point of discussion and agreement among most participants?
1
The pledge to limit global warming to 1.5 degrees Celsius above pre-industrial levels
2
The decision to phase out nuclear energy by 2030
3
The agreement to end all forms of international travel by 2040
4
The resolution to activate global geoengineering projects by 2025