Colorado has a long history of taking proactive measures to protect the quality of the air we all breathe. The regular inspection of emissions and the maintenance of our vehicles has been a key part of …

For our interactive map, select Emissions Testing Interactive Map.

Mar 31, 2025 · EPA tracks total U.S. emissions by publishing the Inventory of U.S. Greenhouse Gas Emissions and Sinks. This annual report estimates the total national greenhouse gas emissions and …

Emissions from human activities have increased atmospheric carbon dioxide by about 50% over pre-industrial levels. The growing levels of emissions have varied, but have been consistent among all …

This page is just one in our collection of work on CO2 and Greenhouse Gas Emissions where you can explore emissions of other greenhouse gases; where our emissions come from; what trajectories of …

Dec 18, 2025 · Learn how federal data are being used to shed light on the sources and hotspots of GHG emissions and to understand the associated impacts on the climate. Greenhouse gases (GHGs) …

We make meaningful climate action faster and easier by mobilizing the global tech community to track greenhouse gas (GHG) emissions with unprecedented detail.

The National Air Pollutant Emission Trends report summarizes long-term trends in emissions of air pollutants and gives in-depth analysis of emissions for the current year.

Jul 13, 2025 · Learn what carbon emissions are, their sources, environmental impact, and measurement methods. Complete 2025 guide with latest data and reduction strategies.

Dec 17, 2025 · Overlooked hydrogen emissions are heating Earth and supercharging methane New research shows rising hydrogen emissions since 1990 have indirectly intensified climate change and …