All coverage
U.N. chief urges leaders of every country to declare 'climate emergency'
By Kate Abnett & Matthew Green
The world's rich need to cut their carbon footprint by a factor of 30 to slow climate change, U.N. warns
By Chris Mooney, Sarah Kaplan & Brady Dennis
5 years after Paris: How countries' climate policies match up to their promises, and who's aiming for net zero emissions
By Morgan Bazilian & Dolf Gielen
Climate change: Have countries kept their promises?
By Matt McGrath
The U.N. Says America Is Already Cutting So Much Carbon It Doesn't Need The Paris Climate Accord
By Ellen R Wald