Former Vice President Al Gore speaks during a session on Climate Trace, a database that monitors emissions, at the COP29 U.N. Climate Summit, Friday, Nov. 15, 2024, in Baku, Azerbaijan.AP Photo/Sergei Grits
World's most polluting cities revealed at COP29: NYC, Houston among top emitters
Seven states or provinces spew more than 1 billion metric tons of greenhouse gases, all of them in China, except Texas, which ranks sixth, according to new data from Climate Trace