New Generation Of Solar Cells Promises Efficiency
By Tim Hewison, posted on July 28th, 2009 in Energy, Sustainability, Technology
Originally Published by ScienceDaily: Latest Science News
Scientists have produced thin film solar cells made from compound semiconductors which are already reaching a 12 percent efficiency.
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Tweetup at HQ
NASA astronaut TJ Creamer talks about his experience in space during a "Tweetup" at NASA Headquarters, Thursday, July 29, 2010, in Washington. Creamer, who spent 161 days living aboard the International Space Station as part of the Expedition 22/23 crew, set up the orbiting outpost's live Internet connection and posted updates about the mission to his Twitter account, sending the first live tweet from orbit. Image Credit: NASA/Paul E. Alers
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