United Nations
http://www.un.org/

Charter of the United Nations
http://www.un.org/en/documents/charter/index.shtml

https://www.undp.org/

https://climatepromise.undp.org/

https://www.un.org/en/conferences/environment/stockholm1972 (United Nations Conference on the Human Environment, 5-16 June 1972, Stockholm)

https://www.undp.org/sustainable-development-goals 

https://www.undp.org/sustainable-development-goals/climate-action

https://www.greenclimate.fund/about

https://sdgs.un.org/goals/goal13

https://www.undp.org/funding

https://strategicplan.undp.org/?_gl=1*1j9pwds*_gcl_aw*R0NMLjE3MzE4ODQ5NjcuQ2p3S0NBaUF4ZWE1QmhCZUVpd0FoNHQ1SzZCM1U0amRZTWg2XzZXTVU4SjdDRl9RbVFMVXZndUR3STRvTEk3SjRwcUE2LWdlZXhadFJSb0MyOVVRQXZEX0J3RQ..*_gcl_au*MTEwODE4MTc1MS4xNzMxODczNTQ2*_ga*NTQzMzk3ODA1LjE3MzE4NzM1NDc.*_ga_3W7LPK0WP1*MTczMTg4NDU3OS4zLjEuMTczMTg4NDk5My4yMC4wLjA.