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Nov 3, 2017, 1:43 pm172 pts
EcoWatch
The hole in Earth's ozone layer is the smallest it's been since 1988, NASA satellite estimates observed . While the ozone hole is still enormous—measuring about 19.6 million square kilometers (7.6 million square miles, or 2.5 times the size of the U.S.) at its annual peak extent this Sept. 11—that's much…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.
