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Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

GrabCAD - a free CAD model library with 2D / 3D CAD files available for software like SolidWorks, AutoCAD, Autodesk Inventor, Solid Edge, SketchUp etc.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Borrow books, DVDs, music, audiobooks, and more. Research databases and reference services. Events and programs for all ages.

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.

Read Discover Magazine blogs for science news, current events, and future views on technology, space, environment, and health and medicine.