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Users of this resource may direct questions about global change to staff members at the U.S. Global Change Research Information Office (GCIRO). An archive of previous questions and answers is provided, along with links to other global change sites.
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Selected science questions are posted here and answered at the end of the week. Previous questions of the week and their answers are also listed in reverse chronological order.
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Students who wish to ask a question about the TOPEX/
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Astronomer Jonathan Keohane explains and presents evidence for the Big Bang Theory in this "Ask a High Energy Astronomer" question and response. Links to a glossary of astronomical terms are included. This is part of NASA's "Imagine the Universe" collection of resources on high-energy astronomy.
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Kids can explore environmental science topics using satellite imagery and NASA data. Materials presented here explain how people affect the Earth and how NASA studies land, water, the atmosphere, and natural hazards from space. Factoids which change every few minutes are presented, and kids can send postcards featuring NASA images to their friends.
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Teachers can access activities and lesson plans, introductory material, a glossary, and frequently asked questions about the sun. Materials include images, videos, CDs, and posters. An extensive selection of links to other sun-related materials is also provided.
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Visitors to this site can choose from a set of links to materials on basic astrophysics, cosmic radiation, features and behavior of the sun, and space weather. An "Ask Us" feature, a glossary, and a selection of links to related sites are included.
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This site presents a summary of current volcanic eruptions and images and videos of volcanoes on Earth. Discussions of the characteristics of volcanism on other worlds in our solar system are also presented and are accompanied by maps and imagery. Links to volcano observatories, parks, and monuments around the world are also included.
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