GHGs are gases that trap heat in the atmosphere.
Learn more about GHGs »
Translate abstract GHG measurements into concrete terms that are easy to understand.
Explore the GHG Equivalencies Calculator »
EPA tracks U.S. GHG emissions by source, economic sector, and gas going back to 1990.
View U.S. emissions »
Do you know your household’s carbon footprint?
Estimate your household GHG emissions, and learn how to shrink your carbon footprint »
Explore all things climate—including:
Overview of Greenhouse Gases »
Learn about the most important GHGs and opportunities for reducing emissions.
Sources of Greenhouse Gases »
See the human activities that add GHGs to our atmosphere and options to cut emissions.
Contact Us to ask a question, provide feedback, or report a problem.