The array of different benchmarks and definitions can obscure how ambitious each country actually plans to be
Countries’ climate targets come in many shapes and sizes. Around two-thirds of the global economy is now covered by a pledge to achieve “net-zero” emissions by around mid-century. . To obtain a clearer picture,The world’s 20 biggest polluters account for four-fifths of global emissions. About half of them have climate targets that provide for their emissions to grow over the next decade—all of those are emerging economies.
Consider China, the world’s biggest emitter with roughly a quarter of total emissions. It says it will cut the carbon-dioxide intensity of itsby over 65% by 2030, compared with 2005 levels. As economies grow, however, they automatically tend to become more energy efficient and so burn less fossil fuel to produce each unit ofCarbon intensity drops, even as the country pollutes more overall. China’s target allows it to emit slightly more by the end of the decade than it does today.
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