Physics for the 21st Century For physics teachers and students who would care to learn more about dark matter, string theory, and other topics in modern physics
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Flower Identifier Browse by number of petals, color, leaf shape, plant parts, and more
Files Tube FilesTube lets you search for shared files from various file hosting sites like FileServe, FileSonic, Megaupload, 4shared, Rapidshare, Hotfile, Mediafire, Netload and many others
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Climate Central Information about global warming solutions, using the power of Silicon Valley scientists, entrepreneurs, and inventors