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 ...

Editor’s note: This story has been updated to correct inaccuracies about the analysis and qualification of the biocrude oil, and the proportion of jet fuel demand that it could supply. (CNN) — In the ...

(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 ...