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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
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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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