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 ...

Processing poop To turn human waste into a usable fuel, Firefly uses a method called hydrothermal liquefaction, which is good for wet waste. By combining high pressure and heat, it converts the sewage ...

After nearly a year, the town of Lexington is moving toward getting a sewage pump truck out of its downtown business district. The town announced this week it has reached an agreement with a property ...

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 ...

(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 ...