Carbon Dioxide in Atmosphere Hits Record High Despite Pandemic Dip - The New York Times
What are the main man-made greenhouse gases? | Environment | The Guardian
Greenhouse gas emissions - Our World in Data
Which emits more carbon dioxide: volcanoes or human activities? | NOAA Climate.gov
How Much Carbon Dioxide Are We Emitting? – Climate Change: Vital Signs of the Planet
RealClimate: The global CO2 rise: the facts, Exxon and the favorite denial tricks
How Exactly Does Carbon Dioxide Cause Global Warming? - You Asked
Explained: Greenhouse gases | MIT News | Massachusetts Institute of Technology
NOAA ESRL Global Monitoring Laboratory
The greenhouse effect - British Geological Survey
Global Greenhouse Gas Emissions Data | US EPA
How much carbon dioxide does the United States and the World emit each year from energy sources? | U.S. Geological Survey
How do human CO2 emissions compare to natural CO2 emissions?
Greenhouse gas emissions - Wikipedia
Why Is Carbon Important? | NASA Climate Kids
Carbon Dioxide, Methane, Nitrous Oxide, and the Greenhouse Effect - Conservation in a Changing Climate
The Dangers of Carbon Pollution on the Environment
Humans Release 40 To 100 Times As Much Carbon As Do Earth's Volcanoes
ELI: Climate Change: Learner Materials: Carbon Cycle
Sources of Greenhouse Gas Emissions | US EPA
