Landcare began in Victoria, Australia in 1986 with a group of farmers near St Arnaud in central Victoria forming the first Landcare group.n the twenty years since the first group formed, Landcare has become an ethic, related to the Stewardship principles where land managers work to protect or improve the land for the future. Landcare groups in Australia are supported by Landcare Australia as a national body, and also by the relevant State.
Batteries are the second most costly component in your average solar light. Some of the outdoor solar lights use AA sized NiCads and if they are charging well, they may last 1 to 2 years. Some of the NiMH batteries can last up to 4 years.
Researchers at The Ohio State University have invented a solar battery -- a combination solar cell and battery -- which recharges itself using air and light. The design required a solar panel which captured light, but admitted air to the battery. Here, scanning electron microscope images show the solution: nanometer-sized rods of titanium dioxide (larger image) which cover the surface of a piece of titanium gauze (inset).