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Smithsonian Voices
From the Smithsonian Museums
Have you ever thought that the leaves changing color was the first sign of autumn? Actually, other factors trigger the leaves to change color!
Smithsonian Science Education Center
November 8, 2017
Travel the World and Learn About Nutritional Guidelines in "Pick Your Plate! A Global Guide to Nutrition"
How Does a Disease Transfer from an Animal to a Human and Back?
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