Alternative Energy

The world's poop could be worth $9.5 billion?

New refrigerator cools food without electricity

Will clean tech make fossil fuels more expensive?

Solar Sunflower harnesses power of 5,000 suns

Lamp runs on nothing but saltwater*

Scientists create engine that is powered entirely by evaporation

Big utilities are ready to go small

IKEA's climate pledge is bigger than Sweden's

James Cameron creates giant solar sunflowers for Malibu school

Solar desalination makes freshwater from salt water

Tesla's new Powerwall battery could be world-changing

Goodbye, kerosene: How solar could transform Africa