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| Computer Help Center: Helpful Answers to your Computer and Internet-related Questions. |
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| How Things Work: Ask about almost anything related to the physical world, and check the well-organized archives for answers to previous interesting questions. |
| NEWTON Bulletin Board System: Ask-a-scientist service designed for K-12 teachers and their students - operated by the Argonne Nat'l. Laboratory, Div. of Educational Programs. |
| Physlink - Ask Experts Physics and Astronomy Questions: Ask questions and check out the archives, organized by topic. |
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