UK-based Firefly plans to produce sustainable aviation fuel from sewage sludge using hydrothermal liquefaction technology, targeting commercial production by 2029 with backing from Wizz Air and a 525, ...

Burning plastic waste for household fuel, or to manage household waste, may be far more prevalent in poor urban areas in developing countries than previously thought, raising serious environmental ...

The development and use of nuclear technology, which began in the early 1940s, has produced a substantial inventory of radioactive waste— material with no current or currently known future use. The ...