clean air act
How the Black Plague Left Traces in Arctic Ice
Charlemagne’s iconic silver currency increased industrial lead pollution, while the Black Death caused it to plummet.
Fossil Fuel Pollution
The EPA Just Gave Fossil Fuel Companies More Freedom to Pollute
Under Scott Pruitt, the agency no longer requires oil and gas companies to hand over information about greenhouse gas emissions.
Postcards from the American Dark Ages of Smog
Donald Trump has called the EPA a 'disgrace.' There was a time when it didn't exist.
How the Biggest, Most Expensive Oil Spill in History Changed Nothing at All
Why the Deepwater Horizon spill failed to inspire reform.