More than 50 countries around the world have pledged to become net zero. But what does net zero actually mean—and is it achievable?<br /><br />Find The Economist’s most recent coverage on climate change: https://econ.st/3zCt2uW <br /><br />Sign up to The Economist’s daily newsletter to keep up to date with our latest stories: https://econ.st/3gJBH8D <br /><br />Why do climate pledges fall short?: https://econ.st/3eVCYaI <br /><br />What are nationally determined contributions to curb climate change?:https://econ.st/3iOi3Yz <br /><br />How sincere are climate pledges?:https://econ.st/3l5yjqy <br /><br />Decarbonising the world’s energy system: https://econ.st/3zQGMT1
