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San Francisco, California
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San Francisco, California
San Francisco, California, United States
October 1999
San Francisco became the transportation hub of northern California after gold was discovered about 100 miles inland in 1848. Here, the San Francisco-Oakland Bay Bridge is visible as it crosses San Francisco Bay, one of the world's great natural harbors. Detailed high-resolution images show networks of streets, densely packed buildings, and lines of automobiles.
IKONOS satellite image by GeoEye
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For Teachers
Satisfies National Science Education Standards: History and Nature of Science: History of science; Science in Personal and Social Perspectives: Science and technology in society; Science and Technology: Abilities of technological design, Understandings about science and technology
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