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Clean power from waste heat

Siemens has developed a technology to use waste heat, which previously had gone unused, to generate electricity. The solution employs silicone oils, which have a lower enthalpy of vaporization than water, ...

Jun 05, 2014
5 / 5 (7) 1

Rare earth metals: Will we have enough?

Life in the 21st century wouldn't be the same without rare earth metals. Cell phones, iPads, laptops, televisions, hybrid cars, wind turbines, solar cells and many more products depend on rare earth metals ...

Sep 20, 2012
4.1 / 5 (8) 13

Yale engineer to build 'hot' solar cells

Associate professor of electrical engineering Minjoo Larry Lee has been awarded $2,540,000 to develop dual-junction solar cells that can operate efficiently at extreme temperatures above 750 degrees Fahrenheit. ...

Sep 22, 2014
4.6 / 5 (7) 0

Clean energy could lead to scarce materials

As the world moves toward greater use of low-carbon and zero-carbon energy sources, a possible bottleneck looms, according to a new MIT study: the supply of certain metals needed for key clean-energy technologies.

Apr 09, 2012
3.9 / 5 (8) 25 | with audio podcast