Full-text search Fulltext search 27 Resultate A house in the spirit of the circular economy The ZHAW has built a house according to the closed-loop principle: Nutrients extracted from urine serve as fertiliser, rainwater is processed into drinking water. And much more besides. Sensors and switches made of wood Sustainable electronic elements can be made from wood. This is helped by a novel process that uses a laser to engrave electrically conductive tracks into veneers. One drop is enough: Paper battery with water switch A team of Empa researchers has developed a disposable paper battery that works with metallic inks and salt - activated by a drop of water. This could be used to power a wide range of small disposable electronic devices with low power consumption. Superworms can digest plastic thanks to gut microbes The larvae of a species of beetle native to Central and South America can apparently survive with plastic as their only food source. The larvae's appetite for Styrofoam could be the key to mass plastic recycling.