Search our collection of background (non-event) articles from news media, science journals and other sources.
Alaska's U.S. senators oppose the EPA's move to regulate and phase out leaded aviation gasoline, citing potential negative impacts on the state's travel and economy.
The Environmental Protection Agency has determined that lead emissions from small planes pose a threat to public health, potentially leading to the agency's first-ever limits on lead fuel in aviation.
Unalaska in Alaska is under an air quality advisory due to ashfall from the eruption of Mount Shishaldin on Unimak Island, with the advisory extended until Thursday.
Scientists warn that methane trapped beneath the Greenland ice sheet could intensify climate warming as the ice melts, releasing the potent greenhouse gas into the atmosphere at accelerating rates.
Wildfires in the N.W.T have emitted 97 megatonnes of carbon into the air so far this year according to the Copernicus Atmosphere Monitoring Service. That's 277 times more than what was caused by humans in the territory back in 2021.
The temperature of asphalt and pavement and concrete and sidewalks in Arizona on a warm sunny day or summer afternoon is 180 degrees sometimes.
Clean, fresh air can be part of the draw for tourists to Canada's North — but they won't find it this week in Yellowknife due to wildfire smoke.
Wildfire smoke has been blasting much of the N.W.T. lately, with air quality advisories in nearly every community Tuesday morning. Meanwhile, much of the territory is also coping with record-breaking heat.
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