Energy

Barely any of Switzerland's solid and liquid animal manure is used to generate energy. Yet fermentation of manure and slurry has the potential to replace fossil fuels and make agriculture more climate-friendly. A publication by energy researchers from institutions including WSL and PSI aims to help government and industry professionals better exploit this valuable resource.

Scientists at EPFL have developed a way to maximize hydrogen yields from biowaste, within few milliseconds. The method uses rapid photo-pyrolysis to produce hydrogen gas and solid conductive carbon from banana peels.

Hydropower delivers renewable electricity, but comes with massive fish mortality – a global dilemma that can only be addressed by true compromises, says Luiz Silva, and outlines how to find them.