Humanity dumped 37 billion tons of CO2 into the atmosphere in 2020 | Mashable
Comparing CO2 emissions to CO2 levels
China: CO₂ emissions 1960-2021 | Statista
Comparing CO2 emissions to CO2 levels
Cumulative Emissions of CO2 - A Response to Climate Change
Is the level of CO2 in the atmosphere rising? - Quora
RealClimate: The global CO2 rise: the facts, Exxon and the favorite denial tricks
Trees Take 2 Billion Tons of CO2 from Atmosphere Annually, Report Finds
How the World Passed a Carbon Threshold and Why It Matters - Yale E360
Alberta Oil Sands Emissions Alone Are 3 Times The Global Market For CO2 - CleanTechnica
How Much Carbon Dioxide Are We Emitting? – Climate Change: Vital Signs of the Planet
Carbon dioxide in Earth's atmosphere - Wikipedia
Earth's CO2 Home Page
Humanity dumped 37 billion tons of CO2 into the atmosphere in 2020 | Mashable
Carbon dioxide in Earth's atmosphere - Wikipedia
Visualizing Changes in CO₂ Emissions Since 1900
How the World Passed a Carbon Threshold and Why It Matters - Yale E360
How can we remove CO2 from the atmosphere? – DW – 09/28/2020
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
RealClimate: The global CO2 rise: the facts, Exxon and the favorite denial tricks
