a group of Swedish scientists have developed a technique which will aid in converting sunlight into electricity with an efficiency of 16.6 per cent. With the help of solar cell modules, the research
The Delhi high court has expressed dissatisfaction with the decision of ministry of environment and forest, which has sets noise pollution standards for generators upto 2.5 kilowatts capacity
the US government has postponed the demolition of four major dams in Washington, built on the Snake and Columbia rivers. The plan proposes to save wild salmons. The dams obstruct the