Philips Research has developed a woodstove for cooking in rural communities in developing countries – and is looking for partners to bring this technology to the market.

With high oil prices showing no sign of quitting, "cleantech" is the new darling VC investment sector. But, asks Mary Lisbeth D'Amico, is the market more froth than substance?

Energy: The Manchester “bobber” is using the power of ocean waves to find a lower-cost route to alternative energy.