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YouTube is a place to discover, watch, upload and share videos.

CAP is a nonprofit organization withover 64,000 members. It performs 95% of continental U.S. inland search and rescue missions as tasked by the Air Force Rescue Coordination Center. Volunteers also perform homeland security, disaster relief and count...

MAKE brings the do-it-yourself mindset to all the technology in your life. MAKE is loaded with exciting projects that help you make the most of your technology at home and away from home. This is a magazine that celebrates your right to tweak, hack, ...

A site for students, educators and anyone else interested in space and astronomy to learn about the wonders of our Universe.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

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wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

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Physics and Physical Science Teacher Supplies - The Cool Stuff your students love!

Edmund Scientific features hundreds of science-related toys, gifts & supplies for enthusiasts, hobbyists, teachers, scientists, & kids. Shop online!