CO2: 429.12 ppmWildfires are burning across the western U.S. and Canada, leaving some residents keeping a wary eye out for possible evacuation orders.
A large Utah wildfire has kept emergency responders from safely reaching the remote site of a firefighting helicopter crash.
British Columbia declared a state of emergency Saturday as a fast-moving wildfire forced more than 20,000 people from communities in western Canada, destroying homes as it raced toward towns along Okanagan Lake.
Evacuation has become a familiar, terrible summer ordeal.
The Los Angeles Times finds that residents near Chiquita Canyon are not the only ones suffering from heinous conditions near landfills.
Wildfires are often associated with the destruction they leave behind, but the smoke they produce can pose a serious health threat far beyond the fire zone, the World Health Organization (WHO) has warned.