The Potomac River was found to have dangerously high levels of E. coli bacteria when water sample tests were conducted ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet initiative has ...

Sewer waste management is dirty work. In the current labor market, it’s not a job many people are interested in. But cities have to get it done for public health and infrastructure integrity. “Looks ...

(CNN) — In the race for alternative, sustainable jet fuels, some companies are getting creative. We’ve heard about planes powered with cooking oil, but what about jet fuel made entirely from human ...