EPA Proposes Rules on Clean Air Act Permitting for Greenhouse Gas Emissions

WASHINGTON – The U.S. Environmental Protection Agency (EPA) is proposing two rules to ensure that businesses planning to build new, large facilities or make major expansions to existing ones will be able to obtain Clean Air Act permits that address their greenhouse gas (GHG) emissions. In the spring...

Smoke from fires can travel thousands of miles impacting weather, climate, and air quality

Prior posts have noted the impact of fires in Southeast Asia on air pollution throughout the region. While it has been known for decades that large wildfires can create or enhance thunderstorm clouds, leading to what are called pyrocumulonimbus clouds ("pyroCbs"), only recently have researchers...