Carbon Dioxide Through Time | EARTH 103: Earth in the Future
The Keeling Curve
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Record global carbon dioxide concentrations despite COVID-19 crisis
CO2 Levels: Current & Historic Atmospheric Carbon Dioxide / Global Temperature Graph & Widget
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
Atmospheric carbon dioxide at record high levels despite reduced emissions in 2020 - Met Office
The Keeling Curve
Carbon Dioxide
Clock is ticking in race to slow carbon dioxide emissions, scientists warn - Alliance for Science
How reliable are CO2 measurements?
10,000 Years of Carbon Dioxide - Berkeley Earth
Graphic: The relentless rise of carbon dioxide – Climate Change: Vital Signs of the Planet
Climate change: Carbon dioxide levels are higher than they've been at any point in the last 3.6 million years - CBS News
Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
Carbon dioxide (ppm) levels and temperature (°C) for the past 400 kY | Download Scientific Diagram
How reliable are CO2 measurements?
Could COVID-caused economic cratering trim 1 ppm from atmospheric CO2?
Carbon Dioxide | Vital Signs – Climate Change: Vital Signs of the Planet
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
Atmospheric CO2 May Have Topped 400 PPM Permanently - Inside Climate News
How have CO2 levels changed since the industrial revolution? | World Economic Forum
