Just 25 Cities Contribute More Than Half of Global Greenhouse Emissions, Report Finds
US News and World Report | July 2021 | Alexa Lardieri

The new report found that all but three of those cities were located in China.

Just about two dozen cities, from a sample of more than 160 urban centers, contribute more than 50% of greenhouse gas emissions, according to a new report.

The report, published Monday in the journal Frontiers in Sustainable Cities, found that just 25 cities, analyzed from a sample of 167 metropolitan areas in 53 countries, comprise 52% of greenhouse gas emissions.

95% of “greenhouse gas” is comprised of water vapor. 3.5% is CO2.

Zero cities contribute water vapor to the atmosphere.

Chemical molecules are so widely dispersed in the atmosphere that they cannot contain, store, nor transform the heat radiation leaving the planet. And they certainly can’t re-emit heat to the planet through the cold layers of the atmosphere. Not through radiation, convection, or conduction — the only means of heat transference.