US

In February 2024 the US Environmental Protection Agency finalised the new National Ambient Air Quality Standard (NAAQS) for PM2.5, reducing the limit from 12.0 µg/m3 to 9.0 µg/m3.

Satellite observations show that global ammonia emissions are higher than reported by bottom-up inventories.

Climate Action Tracker said in a mid-year report for 2022 that climate action has stalled.

After a seven-year stretch of improvement, between 2016 and 2018 the amount of particulate matter air pollution rose ...

The website of the US EPA presents an inventory of GHG emissions for 1990 to 2016, but web pages containing detailed climate analysis were removed one year ago.

Members of the US Environment Protection Agency’s Clean Air Scientific Advisory Committee (CASAC) examining the ecological effects of nitrogen oxides, 

After a review of scientific evidence, the US Environmental Protection Agency (EPA) on 14 July proposed to retain the current national ambient air quality standards ..

What if everyone in the United States ate beans instead of beef? This quite simple dietary change would result in reducing greenhouse gas emissions ..

The first global, long-term satellite study of airborne ammonia gas has revealed increasing levels of the pollutant over four of the world’s most productive agricultural regions.

Energy-related carbon dioxide emissions in the US dropped 1.7 per cent in 2016 due largely to significant decreases in coal use, according to the Energy Information Administration.

A report named “Comparative study on the differences between the EU and US legislation on emissions in the automotive sector” was published by the European Parliament in November.

After two years of increases, greenhouse gas emissions fell in 2015, reducing America’s overall climate pollution to below 1994 levels, according to the Environmental Protection Agency.

The new Cross-State Air Pollution Rule by the US Environmental Protection Agency (EPA) replaces and strengthens the 2005 Clean Air Interstate Rule (CAIR). By 2014, this rule and other state and ...

Switching to low sulphur fuels in shipping can provide greater reductions in air pollutant emissions than previously assumed. Carbon dioxide emissions also drop when ships slow down because of the more expensive fuel.