tons co2 in atmosphere, China: CO₂ emissions | Statista, infographic gets the wrong, underestimates emissions - Carbon Brief

Carbon dioxide now more than 50% higher than pre-industrial levels National Oceanic and Atmospheric Administration

RealClimate: The global CO2 rise: the facts, and favorite denial tricks

Climate Change: Carbon Dioxide | NOAA Climate.gov

Carbon dioxide in Earth's atmosphere -

RealClimate: The global CO2 rise: the facts, and favorite denial tricks

Looking at CO2 production and CO2 in the atmosphere in same units of tons | NextBigFuture.com

infographic gets the wrong, underestimates emissions - Carbon Brief

the World Passed a Threshold and It Matters - Yale

Is the level of in the atmosphere rising? - Quora

Carbon dioxide in Earth's atmosphere -

is ton of CO2, and much do we emit? the Tapio blog

Tiny and forms vital for the climate | World Economic Forum

Climate Change: Carbon Dioxide | NOAA Climate.gov

China: CO₂ emissions | Statista

Comparing emissions CO2 levels

Overview Greenhouse | US EPA

Earth's CO2 Home

Emissions of CO2 - A Response Climate Change

Climate Change: Carbon Dioxide | NOAA Climate.gov

CO2 in the Hit Highest Level in Modern History

Trees Take Billion Tons of CO2 from Annually, Report

Removing CO2 from the air no longer optional

Climate Change: Carbon Dioxide | NOAA Climate.gov