Each year, three billion kilograms of pesticides are used worldwide. Without the use of these chemicals, there would be a 78 ...

Colorado has some of the largest landfills in the country. Landfills are a source of methane, a potent climate pollutant, and other harmful air pollutants.

Environmental Protection Agency announced July 7. The Superfund National Priority List lists locations throughout the United States "where historic releases of hazardous substances, ...