2060 pledge: How the world’s largest CO2 emitter vows to go greener

In a surprise and widely welcomed pledge for the global environment, Chinese leader Xi Jinping committed in a speech to the United Nations in September that China would “achieve carbon neutrality” before 2060. Mr. Xi’s announcement came after pressure from European leaders and signaled a significant turnaround from Beijing’s long resistance to restrictions on economic growth. Whether China will reach its target remains uncertain. Yet experts say the pledge marks a major step in the world’s campaign to arrest climate change.