Chinese lantern seeds (@ Skip Moody-Rainbow/Corbis)

Chinese lantern seeds (@ Skip Moody-Rainbow/Corbis)

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Coops Shot Tower within the glass dome of the Melbourne Shopping Centre, Victoria, Australia (@ Andrew Watson/Axiom/Aurora Photos)

Coops Shot Tower within the glass dome of the Melbourne Shopping Centre, Victoria, Australia (@ Andrew Watson/Axiom/Aurora Photos)

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Little Tahoma peak in the background with wildflowers in the Upper Paradise Valley of Mt. Rainier National Park, Washington, U.S.A. (@ Stephen Matera)

Little Tahoma peak in the background with wildflowers in the Upper Paradise Valley of Mt. Rainier National Park, Washington, U.S.A. (@ Stephen Matera)

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Hartford skyline, Connecticut, U.S.A. (@ Enzo Figueres/Getty Images)

Hartford skyline, Connecticut, U.S.A. (@ Enzo Figueres/Getty Images)

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A variety of bacteria, yeast, and fungus on a kitchen sponge (@ Dennis Kunkel Microscopy, Inc./Visuals Unlimited, Inc.)

A variety of bacteria, yeast, and fungus on a kitchen sponge (@ Dennis Kunkel Microscopy, Inc./Visuals Unlimited, Inc.)

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Karen Ramstead’s sled dog team during the 2005 Iditarod Great Sled Race in Alaska, U.S.A. (@ AlaskaStock/Photolibrary)

Karen Ramstead’s sled dog team during the 2005 Iditarod Great Sled Race in Alaska, U.S.A. (@ AlaskaStock/Photolibrary)

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Daffodils in front of Cardiff Castle, Wales (@ Exactostock/SuperStock)

Daffodils in front of Cardiff Castle, Wales (@ Exactostock/SuperStock)

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