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A new generation of high-efficiency wood stoves are low in emissions and high in energy efficiency.
Nov 24, 2010 08:36 AM ET // Alyssa Danigelis
A rocket motor "prints" thin layers of fuel to provide a more efficient burn.
Nov 30, 2010 04:40 PM ET // Alyssa Danigelis
Lasers are making a magical kind of LED turn all surfaces into light sources.
Feb 7, 2012 08:55 AM ET // Alyssa Danigelis
A unique device turns excess water pressure from reservoirs, water treatment plants and factories into electricity.