View from Haleakalā, Maui, Hawaii (@ SuperStock/Getty Images)

View from Haleakalā, Maui, Hawaii (@ SuperStock/Getty Images)

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Honey jars (@ Leser, Nicolas/Corbis)

Honey jars (@ Leser, Nicolas/Corbis)

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Covered bridge near Bradley, Maine (@ A. J. Whitney/Getty Images)

Covered bridge near Bradley, Maine (@ A. J. Whitney/Getty Images)

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Black-backed jackal pups (@ Jami Tarris/Corbis)

Black-backed jackal pups (@ Jami Tarris/Corbis)

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Mythical creatures guarding the golden chedi at the Grand Palace, Bangkok, Thailand (@ David Davis/Photolibrary)

Mythical creatures guarding the golden chedi at the Grand Palace, Bangkok, Thailand (@ David Davis/Photolibrary)

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Midnight sun on the North Cape, Norway (@ SIME/estock)

Midnight sun on the North Cape, Norway (@ SIME/estock)

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A visitor near giant sequoias in Yosemite National Park, California (@ Frans Lanting /Danita Delimont)

A visitor near giant sequoias in Yosemite National Park, California (@ Frans Lanting /Danita Delimont)

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Northern hardwood forest near Russell Pond in Baxter State Park, Maine (@ Jerry and Marcy Monkman/Aurora Photos)

Northern hardwood forest near Russell Pond in Baxter State Park, Maine (@ Jerry and Marcy Monkman/Aurora Photos)

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Vehicle traveling through a tea plantation in Kerala, southern India (@ Hugh Sitton/Corbis)

Vehicle traveling through a tea plantation in Kerala, southern India (@ Hugh Sitton/Corbis)

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Imagine mosaic, part of the Strawberry Fields memorial in Central Park, New York City (@ Ocean/Corbis)

Imagine mosaic, part of the Strawberry Fields memorial in Central Park, New York City (@ Ocean/Corbis)

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Aerial view of Ambergris Caye, Belize (© Michael Melford/Getty Images)

Aerial view of Ambergris Caye, Belize (© Michael Melford/Getty Images)

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Two hyacinth macaws in a tree, the Pantanal wetland, Brazil (© Roy Toft/Getty Images)

Two hyacinth macaws in a tree, the Pantanal wetland, Brazil (© Roy Toft/Getty Images)

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Small waterfall in Hamersley Gorge, Karijini National Park, Australia (© Alessandra Sarti/Photolibrary)

Small waterfall in Hamersley Gorge, Karijini National Park, Australia (© Alessandra Sarti/Photolibrary)

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Oktoberfest tent, Spatenbräu, Munich, Germany (© Bodo Schieren/Photolibrary)

Oktoberfest tent, Spatenbräu, Munich, Germany (© Bodo Schieren/Photolibrary)

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Cup fungi in Kinabalu National Park on the island of Borneo (© Frans Lanting/Corbis)

Cup fungi in Kinabalu National Park on the island of Borneo (© Frans Lanting/Corbis)

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Town Hall in Hanover, Germany (© Scholz F. Collection/Arco Images/Age Fotostock)

Town Hall in Hanover, Germany (© Scholz F. Collection/Arco Images/Age Fotostock)

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The Singapore Flyer, a 42-story high observation wheel in Singapore (© David McLain/Aurora Photos)

The Singapore Flyer, a 42-story high observation wheel in Singapore (© David McLain/Aurora Photos)

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Aerial view of Lake Mead and land erosion near the border of Arizona and Nevada (© Lee Foster/Lonely Planet Images)

Aerial view of Lake Mead and land erosion near the border of Arizona and Nevada (© Lee Foster/Lonely Planet Images)

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Cleaning behavior of blue-striped grunt and four-eyed butterfly fish, Florida Keys National Marine Sanctuary -- Stephen Frink/Corbis

Cleaning behavior of blue-striped grunt and four-eyed butterfly fish, Florida Keys National Marine Sanctuary -- Stephen Frink/Corbis

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Toronto skyline during the Canadian National Exhibition, Ontario, Canada -- Gary Cralle/Getty Images

Toronto skyline during the Canadian National Exhibition, Ontario, Canada -- Gary Cralle/Getty Images

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Historical regatta in Venice, Italy -- SIME/eStock Photo

Historical regatta in Venice, Italy -- SIME/eStock Photo

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The pearl monument in the Corniche neighborhood of Doha, Qatar, illuminated at night with the new high-rises of West Bay in the background -- Jon Hicks/Corbis

The pearl monument in the Corniche neighborhood of Doha, Qatar, illuminated at night with the new high-rises of West Bay in the background -- Jon Hicks/Corbis

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Dead trees in Dead Vlei, Namib-Naukluft Park, Namibia -- Frank Krahmer/Corbis

Dead trees in Dead Vlei, Namib-Naukluft Park, Namibia -- Frank Krahmer/Corbis

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Aerial view of rice fields in Yunnan Province, China -- Jialiang Gao/Getty Images

Aerial view of rice fields in Yunnan Province, China -- Jialiang Gao/Getty Images

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