A prize-winning light bulb, known as led bulb that lasts for 20 years is going on sale in the US starting on Earth Day.
A .0019 millimeter thick ultra thin solar cell device, thinner than a thread of spider silk, so flexible they can be wrapped around a single human hair have been invented by scientists.
The sun powered airplane made its inaugural flight to Paris and Brussels in 2011.
The world’s expanding cities are currently on track to occupy an extra area of 1.5 million square kilometers by 2030, equivalent to France, Germany and Spain combined.
Biodiesel has often been hailed as a possible solution to reducing our reliance on fossil fuels.
The European Union in 2007, has committed to reduce greenhouse gas emissions by 20 percent below the 1990 levels by year 2020, producing of its electricity from renewable energy sources.
Hawaii has now become a key federal laboratory for biofuels because of its dependence on imported oil as well as its great weather for growing crops.