How the World Passed a Carbon Threshold and Why It Matters - Yale E360
10,000 Years of Carbon Dioxide - Berkeley Earth
How have CO2 levels changed since the industrial revolution? | World Economic Forum
Despite pandemic shutdowns, carbon dioxide and methane surged in 2020 - Welcome to NOAA Research
CO2 levels in the atmosphere just reached the highest level in human history | World Economic Forum
Atmospheric concentrations - Our World in Data
Earth Matters - Carbon Dioxide Reaches Record Levels, Plus 6 Things to Know About the Greenhouse Gas
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
CO2 Levels: Current & Historic Atmospheric Carbon Dioxide / Global Temperature Graph & Widget
Greenhouse gas concentrations surge to new record | World Meteorological Organization
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Down To Earth Climate Change - Resources
Are CO2 levels increasing?
Despite pandemic shutdowns, carbon dioxide and methane surged in 2020 - Welcome to NOAA Research
Is CO2 a pollutant?
Carbon dioxide now more than 50% higher than pre-industrial levels | National Oceanic and Atmospheric Administration
Climate change: Carbon dioxide levels are higher than they've been at any point in the last 3.6 million years - CBS News
Planet Health Report: AIR | NASA Climate Kids
How the World Passed a Carbon Threshold and Why It Matters - Yale E360
A Graphical History of Atmospheric CO2 Levels Over Time | Earth.Org
Atmospheric CO2 concentrations worldwide 1959-2021 | Statista
Climate Change: Atmospheric Carbon Dioxide | NOAA Climate.gov
Global Monitoring Laboratory - Carbon Cycle Greenhouse Gases
