Almost a quarter of the world's electricity supply is now being produced from renewable energy sources.
The Turanor PlanetSolar is circumnavigating the world's oceans to prove that renewable energy can work.
A new project by Centrica is aiming to turn ordinary human household waste in to renewable gas.
Its one of the most untapped sources of energy on the planet but ocean power is about to get a boost as rivals battle it...
By harnessing the power of waves the designers of a new energy device known as "Anaconda" which consists of little more ...