Greening pursues the preservation and protection of bio-diversity and natural habitat. The term is derived from ecology, the science of interactions between living things and their environment. In politics, greening is understood to mean environmentally sound design, especially in decisions for planning and the economy. For example, in 2015, the EU introduced a direct payment...

Direct current (abbreviated DC), refers to an electrical charge flow in which the charge carriers flow exclusively in one direction. The so-called technical current direction is based on charge carriers flowing from the positive pole to the negative pole. This definition is historical. In fact, in metallic conductors, the negatively charged electrons cause the charge...