Hydrofluorocarbons, which replaced ozone-depleting CFCs, proved disastrous for climate change. Countries have now agreed to ban HFCs – but that may not bring as big a climate benefit as was hoped.
It’s a historic achievement in the fight against global warming: Envoys from the nearly 200 nations signed up to the Montreal Protocol gathered at a high-level meeting in the Rwandan capital Kigali last week managed on Saturday (15.10.2016) to strike a crucial deal to phase out the use of hydrofluorocarbons (HFCs), which act as potent greenhouse gases.
This agreement was initially understood to prevent a 0.5 degree Celsius (0.9 degree Fahrenheit) increase in global warming by the end of the century.
Although the ban will help in the fight against climate change, uncertainty around HFCs’ impacts has tempered this estimate.
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