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Science  23 Jul 2004:
Vol. 305, Issue 5683, pp. 457
DOI: 10.1126/science.305.5683.457d

A familiar sight for San Franciscans, fog often shrouds the Golden Gate Bridge. Fogs are frequent along the West Coast in late summer and fall because warm, dry air streaming from the land cools and picks up moisture, which condenses on specks of salt and pollution. You can discover plenty more about weather and climate at MetEd, a collection of tutorials aimed at everyone from pilots to meteorology students and researchers. Created by the University Corporation for Atmospheric Research in Boulder, Colorado, the multimedia tutorials interweave graphics and text and sometimes include lectures from atmospheric scientists. You can delve into more than 100 topics, from dust-storm prediction to global warming to the Pacific Ocean's El Niño-Southern Oscillation cycle.

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