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 ...

The magazine’s Ethicist columnist on the responsibility one has to dispose of an outmoded appliance. By Kwame Anthony Appiah My husband and I have decided to purchase a new induction range, to reduce ...

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 ...

Getting your Trinity Audio player ready... Colorado continues to fail to clean the dirty air that hangs over the northern Front Range, so state regulators plan to ask the Environmental Protection ...