Scientists create engine that is powered entirely by evaporation

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With Solar Energy Research Center, we're one step closer to making fuel from sunlight and CO2

Are the Mekong River dams double-edged swords?

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Philips' latest bright idea is a no-frills $5 LED bulb

Battling climate change requires actions big and small

Cities around the world to dim lights for Earth Hour

Bright and stormy night: Clouds make cities lighter

Bionic leaf can convert solar energy into liquid fuel

Self-lacing shoe to be powered from walking

Why demand response will shape the future of energy