Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
Is the level of CO2 in the atmosphere rising? - Quora
Annual CO2 emissions worldwide 1940-2020 | Statista
The new plan to remove a trillion tons of carbon dioxide from the atmosphere: Bury it - The Washington Post
Overview of Greenhouse Gases | US EPA
Do The Math - supporting a 350.org tour — Carbon Visuals
Carbon Dioxide Levels Are Highest in Human History - The New York Times
U.S. historical CO2 emissions 1800-2019 | Statista
Global CO2 emissions have been flat for a decade, new data reveals - Carbon Brief
Comparing CO2 emissions to CO2 levels
RealClimate: The global CO2 rise: the facts, Exxon and the favorite denial tricks
Global Carbon Emissions | National Geographic Society
Doha infographic gets the numbers wrong, underestimates human emissions - Carbon Brief
Looking at CO2 production and CO2 in the atmosphere in the same units of tons | NextBigFuture.com
The U.S. Is the Biggest Carbon Polluter in History. It Just Walked Away From the Paris Climate Deal. - The New York Times
How do human CO2 emissions compare to natural CO2 emissions?
UK: Historical CO2 emissions 1750-2020 | Statista
Carbon dioxide in Earth's atmosphere - Wikipedia
Co2 Emissions of the United States | 8 Billion Trees
NOAA ESRL Global Monitoring Laboratory
Climate Change Indicators: U.S. Greenhouse Gas Emissions | US EPA
Carbon dioxide in Earth's atmosphere - Wikipedia
Humanity dumped 37 billion tons of CO2 into the atmosphere in 2020 | Mashable
Carbon dioxide in Earth's atmosphere - Wikipedia
