Colorado to capture Canadian wolves for second year of reintroduction program

More summer smoke? Experts monitor climate-fueled events and health effects

Midwest Tribes to take Line 5 concerns to United Nations forum

Multiple New York border crossings closed by car explosion

Commentary: Canada’s wildfires are a country away but affect Colorado in multiple ways

North America’s summer of wildfire smoke: 2023 was only the beginning

Experts unclear on whether hazardous air quality will persist this fall

Montana firefighters scramble to aid Canadian crews

With climate change, smoky air could become routine threat

In a smoky summer, outdoor workers can't overlook heat threats

Opposition grows for expanded Pacific Northwest pipeline as decision nears

Air quality alerts continue Sunday in eastern Colorado due to Canadian fires

Air quality advisory continues for eastern Colorado Saturday due to fires in Canada

Eastern Colorado under continuing air quality advisory due to fires in Canada

Canadian coal mine pollution threatens north Idaho river

Michigan tribes, others file grievance with UN over Line 5 project

Critics ask governors to speak out against northwest pipeline expansion

Global economy 2023: how countries around the world are tackling the cost of living crisis

Study: Kids in child care not more likely to exhibit problematic behaviors

U.S. tribal leaders bring Canadian mine waste concerns to D.C.

Tribes say British Columbia mine waste threatens water, way of life

Fiona hits Atlantic Canada: Climate change means the region will see more frequent storms

Canada, Denmark agree to resolve Arctic border dispute

Linking protected areas from Yellowstone to the Yukon shows the value of conserving large landscapes