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European beech forest, Belgium
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Petroglyphs near Fruita in Capitol Reef National Park, Utah, United States
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Daylight saving time begins
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Celebrating women
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Kochia, Hitachi, Ibaraki Prefecture, Japan
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Singing the blues
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Bright blue lakes and rugged mountains
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Unbe-leaf-able
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Coral Reef Awareness Week
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Celebrating our looming lunar neighbour
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Tulips, Netherlands
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Hoodoos, Sunset Point, Bryce Canyon National Park, Utah, USA
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This lesson is going swimmingly
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International Literacy Day
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Earth Day
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Katahdin Woods and Waters National Monument, Maine, USA
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Abbotsford, British Columbia
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Nazca boobies, Wolf Island, Galápagos Islands, Ecuador
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Lands End, Cornwall, England
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Park of the Monsters
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Ever seen garlic bloom?
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What are these unique creatures?
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This magical beach is worth the hike
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Blood moon
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Plitvice Lakes National Park, Croatia
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Yi Peng lantern festival, Chiang Mai, Thailand
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Manatee
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World Population Day
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Merced River, Yosemite National Park, California, United States
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Emerald Bay and Fannette Island, Lake Tahoe, California, United States