The 2016 amendment to the Montreal Protocol, held in Kigali, Rwanda, involved representatives from 197 nations agreeing to phase out hydrofluorocarbons (HFCs), substances that, though phased out under previous agreements for their ozone-depleting properties, became more widely used as replacements due to their functionality in refrigeration and air conditioning. Recognizing the devastating impact of HFCs as potent greenhouse gases—2800 times more powerful than carbon dioxide in trapping heat—the global community convened to address this pressing climate issue. The agreement established a clear timeline for reducing HFC consumption by over 80% by 2045 while allowing developing countries additional time to comply. The discussions in Kigali built on decades of international collaboration to protect the ozone layer, first initiated with the signing of the Montreal Protocol in 1987. The success of the original treaty in phasing out ozone-depleting substances had laid the groundwork for addressing climate change proactively. Nations arrived at a common understanding that halting HFC use was not only essential for mitigating climate change but also boosted energy efficiency and economic savings. This historic accord received recognition from environmental groups and government officials, with many seeing it as a crucial step toward achieving goals set forth in the Paris Agreement.