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Last modified on Fri 23 Apr 2021 14.22 EDT
The US, the worldâs second biggest emitter of greenhouse gases, is now committed to halving emissions this decade. Joe Bidenâs announcement, at a White House virtual climate summit, has thrown the spotlight clearly on the worldâs biggest emitter: China.
China is responsible for roughly a quarter of global greenhouse gas emissions, and is likely to increase its carbon output this year. Without strong action from China, the world will be unable to hold back climate breakdown.
The country has a long-term target of reaching net zero emissions by 2060 but has yet to produce a national plan for its emissions this decade, as required under the 2015 Paris climate agreement.