Colorado residents who’ve spotted large low-flying aircraft in recent days needn’t worry.
Out of all the states in the nation, Colorado offers the best sneak peek at what the nation would look like once President Barack Obama’s energy regulations take effect.
A new report released from the American Lung Association shows there is still room for improvement of air quality across Colorado.
A Longmont man and his business have been charged with discharging sewage into a river.
Mesa County health officials have issued a health advisory due to high levels of smoke in the Grand Valley.
The U.S. Environmental Protection Agency has given final approval to Colorado’s strategy to reduce pollution, which relies on switching some coal-fired power plants to natural gas.