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Air Pollution as Seen From the Skies
From Mt. Etna to China to the Sahara, these striking satellite images of air pollution are from both natural and man-made causes
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Acid Rain and Our Ecosystem
More than 150 years after acid rain was first identified, scientists now see success in recovery from its damaging effects
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The History of Air
Paleontologists are looking to the fossil record to decipher what the earth’s atmosphere was like hundreds of millions of years ago
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The Dinosaur Casualties of World War I
On December 6, 1916, two years into “the war to end all wars,” a German naval crew destroyed a set of 75-million-year-old dinosaur skeletons
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