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Power

Submission + - Microscopic Solar Cells Prove Much More Efficient (technologyreview.com)

TechRev_AL writes: Researchers at Sandia National Labs have developed microscopic solar cells that could be far more efficient when combined with novel optics. Sandia's cells are between 0.25 and one millimeter in diameter and can be made about 10 times thinner than conventional ones lowering manufacturing costs. The resulting cells are about 20 micrometers thick but have the same efficiency as conventional cells, converting about 14.9 percent of sunlight into electrical energy. The Sandia researchers have assembled and tested a single micro solar cell as proof of principle, and they have begun testing functioning solar modules made from multiple tiny cells and are developing techniques for assembling them efficiently.
Education

Submission + - These Dragonflies migrate across oceans! (scienceblogs.com)

grrlscientist writes: While living and working as a marine biologist in Maldives, Charles Anderson noticed sudden explosions of dragonflies at certain times of year. He explains how he carefully tracked the path of a plain, little dragonfly called the Globe Skimmer, Pantala flavescens , only to discover that it had the longest migratory journey of any insect in the world. [video]
Google

Google Conducts Trial on User-Voted Search Results 110

Grim Reaping writes "A feature in testing at Google Labs allows users to not only prioritize their favorite results, but also move, ignore, and add search results to personalized records of their preferences. The experiment features a simple 'thumbs up' and 'thumbs down' option for each search result; users can also suggest a URL that might be more relevant to their query. 'Other Google users will not be affected by the individual tweaking: instead it will be stored along with the users' own personal information for the next time they search for this word or phrase, so users are required to log in to avail of it.'" The company is also clear on the experiment's page: this feature may never see full release on the site.

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