Known in North America as caribou, reindeer are built to live in freezing Arctic regions like northern Norway, where this herd was photographed under the transfixing swirl of the aurora borealis, or northern lights. Reindeer have evolved unique features that help them thrive in these harsh environments. Their noses are adapted to warm the air they breathe before it enters their lungs, which helps maintain a steady body temperature even in the coldest of weather. And most of their bodies, including their hooves, are covered with thick, dense fur to keep them well insulated. In fact, they are more likely to overheat then freeze—so when they"re flying through the starry skies tonight, they"ll be feeling snugger than Santa Claus in his red velvet suit.
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Today in History
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Peel Castle on St. Patrick’s Isle with the Isle of Man in the background
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Meet our fuzzy Earth Day mascot
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Sea Slug Day
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Why’s it called a spelling ‘bee,’ anyhow?
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Sea Otter Awareness Week
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Cherry blossom season in Tokyo
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Ancient theater of Epidaurus, Greece
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Dance of the egret
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Aýna, Albacete, Spain
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North Sea at sunset, Norddorf, Germany
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A visionary artist paints his own garden view
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Cloughoughter Castle, County Cavan, Ireland
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Commemorating peace in Antarctica
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National Go Birding Day
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FOR FOREST by Klaus Littmann
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World Space Week
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Composite image of a lunar eclipse
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International Day for Biodiversity
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Christmas Bird Count
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National Hispanic Heritage Month
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A unique elephant encounter in Nantes
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Sunlight sets Iceland s Eyjafjallajökull aglow
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Tafilalet oasis in Morocco
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75th anniversary of the Spruce Goose
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Colle Santa Lucia, Dolomites, Italy
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International Moon Day
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World Oceans Day
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A Flag Day tradition
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Incense making, Vietnam
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Poinsettia Day