Greenhouse gas levels surged in 2020, NOAA says
Down To Earth Climate Change - Resources
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
CO2 since 1800
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Graphic: The relentless rise of carbon dioxide - NASA Science
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
Carbon dioxide concentration over time
Broken Record: Atmospheric Carbon Dioxide Levels Jump Again
A new 66 million-year history of carbon dioxide offers little comfort for today
Carbon Dioxide | Vital Signs – Climate Change: Vital Signs of the Planet
The Keeling Curve
File:Atmospheric carbon dioxide concentrations and global annual average temperatures over the years 1880 to 2009.png - Wikimedia Commons
Yearly Carbon Dioxide Peak
Here's how CO2 emissions have changed since 1900 | World Economic Forum
Dr. Robert Rohde on X: "Carbon dioxide's greenhouse effect is increasing because we have increased its concentration in the atmosphere by ~50% since preindustrial times, mostly by burning fossil fuels. This increase
Mass Extinctions and CO2 levels - John Englander - Sea Level Rise Expert
What were CO2 levels 10,000 years ago? - Quora
It's gonna get hot: Atmospheric carbon dioxide over the past 800,000 years » Darrin Qualman
