Start Date: End Date: Published Date Data Date
Flooding in Brazil
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Published March 2, 2002
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Red Tide Along Florida's West Coast
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Irrigation in the Heart of the Sahara
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Mauna Kea and Mauna Loa, Hawaii
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United States West Coast
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Although it is now the largest desert on Earth, during the last ice age the Sahara was a savannah with a climate similar to that of present-day Kenya and Tanzania. The annual rainfall was much greater than it is now, creating many rivers and lakes that are now hidden under shifting sands or exposed as barren salt flats. Over several hundred thousand years, the rains also filled a series of vast underground aquifers. Modern African nations are now mining this fossil water to support irrigated farming projects.
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Florida, Bahamas and Cuba
Published March 1, 2002
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Saharan dust over Middle East
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Dust over the Red Sea
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Dust over Middle East
Mass Mortality of Monarchs in Mexico