This work is one of a series of readers from NASA-sponsored Project 3D-VIEW (Virtual Interactive Environmental Worlds), an interdisciplinary, curriculum-based program for middle schools.

Glen Schuster, Project Director
www.3dview.org
U.S. Satellite Laboratory, Inc.

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Rye, NY 10580
© 2006 U.S. Satellite Laboratory, Inc.

The following photos are used courtesy of NASA: page 9 GSFC/NASA; page 13 NASA; page 26 Earth Sciences and Image Analysis Laboratory, Johnson Space Center--digital photograph number ISS002-E- 8683; page 30 NASA/GSFC/METI/ ERSDAC/JAROS, and U.S./Japan ASTER Science Team; page 31 NASA/GSFC.

Cover and selected graphics by Tara Alvarez

Layout by Ricardo Forero