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Counting Trees in Africa’s Drylands
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Published December 7, 2020
An international team of scientists has used artificial intelligence and commercial satellites to identify an unexpectedly large number of trees spread across arid and semi-arid areas.
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When Rivers are Borders
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Published September 17, 2020
A new dataset reveals interesting patterns about where and why rivers define national borders.
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How Rivers Shape States
Published September 8, 2020
Many state and local boundaries around the world—including many in the United States—are the product of rivers.
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A Global Water Hyacinth Invasion
Published September 2, 2020
A new study found that the abundance of these floating plants has increased due to urbanization.
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Mapping the Roots of Mangrove Loss
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Published August 25, 2020
While the rate of losses has declined, the ecosystems are still threatened and are facing more environmental stress.
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Still Sandy After All These Years
Published May 14, 2020
In 2002, Earth Observatory published one of the site’s most popular images: the Great Bahama Bank. Eighteen years later, the science has advanced but the sand has not.
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Saving Straddie’s Sand
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Published May 7, 2020
After seven decades, sand mining operations have stopped in Australia’s North Stradbroke Island.
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Admiralty Island: “Fortress of the Bears”
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Published April 24, 2020
Brown bears abound on this Alaskan island, parts of which have seen both widespread clear-cutting and forest regrowth in recent decades.
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