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| Explains design, technology, aerodynamics, history, space travel, and other topics related to aerospace engineering |
| Do you have a question about volcanoes, earthquakes, mountains, rocks, maps, ground water, lakes, or rivers? A service of the earth scientists at USGS |
| Answers to questions in the natural, social and computer sciences from Bob Treat |
| Experts at the U of Hawaii answer questions about volcanoes and igneous rocks, earthquakes and seismology, natural disasters, geochemistry, the environment, pollution, hydrology and water quality, min |
| Gives users direct access to experts in a wide range of categories |
| A networking resource for reference questions that have people, in essence, stumped |
| Provides individualized counseling for educational placement from pre-school through graduate school, for re-entry and adult learners, and for the American and international student |
| Ask-a-scientist service designed for K-12 teachers and their students - operated by the Argonne Nat'l |
