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For the first time in Olympic history, the medals at the Olympic Games contain gold, silver and copper that has been recovered from electronic waste (e-waste). Each medal was made with a tiny bit of the more than 140,000 tons of e-waste that otherwise would have been sent to Canadian landfills. More than 1,000 medals to be awarded at the Vancouver games this year.

Creating heat using abundant solar energy stored in rivers, lakes, reservoirs and the sea.

Empowering women through clean power technologies has been put firmly on the agenda thanks to recent events held by the United Nations and Ashden Awards. So how is clean tech changing lives and how can it be scaled up to game-changing levels?

While the world's eyes are on the sporting action during this year's Cricket World Cup, behind the scenes the UK stadiums hosting the games are smashing renewable energy goals.