One on one interviews, project developments, and in-depth features are just some of what envelops this year's most watched videos. Check out the top ten videos and let us know your favorite in the comments below.
The 7th Most Watched Video of 2012:
Siva Sivaram of Twin Creeks Technology discusses the company's new manufacturing tool, which creates ultra-thin cells that the company says could reduce the cost of solar by as much as 50 percent.
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