Human-caused emissions of the potent but often-overlooked greenhouse gas nitrous oxide, or laughing gas, are rising sharply and increased 40 percent over the past 40 years, according to a ...

Trading in gasoline-powered lawn equipment for electric and battery-operated models could help curb the ozone pollution plaguing Colorado’s Front Range, a new report has found. Making such a switch ...

For a large part of the last two weeks, Steven Brown, an air quality chemist with the National Oceanic and Atmospheric Administration, has soared over Colorado’s Front Range in a slow-flying Twin ...

More than one in five Americans with annual household income under $30,000 and who have a gas range say they used that appliance to heat their home during the past year. That’s according to a ...