World leaders vow deeper cuts to carbon emissions

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The United States vowed to halve the planet-warming greenhouse gases it emits by 2030, a target largely matched by Japan.

Chinese President Xi Jinping said China, the world's largest producer and consumer of coal...China will strive to peak carbon dioxide emissions before 2030 and achieve neutrality before 2060

Qn: Assess the view that attempts to control climate change can never be truly effective. (Cam. 2017)