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The HFC challenge: Can the Montreal Protocol continue its winning streak?
by Jane Palmer on 5 May 2021
Since the Montreal Protocol was signed in 1987, countries have phased out most of the ozone-damaging gases, but their replacements, the HFCs, are powerful greenhouse gases that contribute to climate change.
In 2016, national delegates agreed on the Kigali Amendment to the Montreal Protocol, which calls for cutting the production and use of HFCs by 80–85% by the late 2040s. The amendment entered into force at the start of 2019, with the goal of avoiding additional warming by up to 0.4°C (0.72 °F) by the end of the century. ....

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