Carbon Dioxide Through Time | EARTH 103: Earth in the Future
Down To Earth Climate Change - Resources
How reliable are CO2 measurements?
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
Carbon dioxide in Earth's atmosphere - Wikipedia
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
How the World Passed a Carbon Threshold and Why It Matters - Yale E360
CO2: Past, Present, & Future – Time Scavengers
Carbon dioxide concentration over time
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
Graphic: The relentless rise of carbon dioxide – Climate Change: Vital Signs of the Planet
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Carbon Emissions and Population Over Time infographic - Population Education
CO₂ and Greenhouse Gas Emissions - Our World in Data
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
CO2 Levels: Current & Historic Atmospheric Carbon Dioxide / Global Temperature Graph & Widget
Earth's CO2 Home Page
How have CO2 levels changed since the industrial revolution? | World Economic Forum
CO2 since 1800
Do high levels of CO2 in the past contradict the warming effect of CO2?
Atmospheric Carbon Dioxide Growth Rate
