Nearly half of all U.S. households rely on gas or propane furnaces to stay warm. But for those homes, the rules of home heating are about to change. By late 2028, a new federal mandate from the U.S.

Natural gas furnaces not only heat your home, they also produce a lot of pollution. Even modern high-efficiency condensing furnaces produce significant amounts of corrosive acidic condensation and ...

Nitrogen is an essential element for living organisms, needed to build DNA, proteins and chlorophyll. Although nitrogen makes up nearly 80% of the air we breathe, it’s availability to plants and ...