Energy innovation can take many forms, and the variety in energy research was on display at the summit. ARPA-E, part of the ...

And wind has long served as a power source to humans ... Still, it only provides a small fraction of the world's energy. Most wind energy comes from turbines that can be as tall as a 20-story ...

Though costly to implement, solar energy offers a clean, renewable source of power. 3 min read Solar energy is the technology used to harness the sun's energy and make it useable. As of 2011 ...