Today marks the second-ever World Reef Day, an observance created to help focus global attention on the deteriorating health of our planet"s vital reef systems, and also to help marshal efforts to help them recover. Why should we care about the health of ecosystems such as the Great Barrier Reef, seen in this photo? Because reefs are an easy indicator of how healthy our oceans are. And right now, reefs aren"t doing too well. What can we do? Learn about reefs—not just the dangers that put healthy reefs at risk, but why reefs are such a critical part of Earth"s greater ecosystems.
The largest living organism on Earth
Today in History
More Desktop Wallpapers:
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Union Square, Manhattan
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Wind Cave National Park celebrates 120 years
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An unlikely friendship in the wild
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A step toward freedom
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Henningsvær Stadion, Norway
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World Art Day
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A winter light show
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Eastern grey kangaroos in Australia’s Kosciuszko National Park
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The aftermath of a meteorite
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Aerial view of the Colorado River Delta in Mexico
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Look to the north sky tonight for the Perseids
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A universe underground
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Seattle Central Library, Seattle, Washington
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International Rock Day
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Milford Sound/Piopiotahi rainforest in New Zealand
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Cappadocia, Türkiye
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Lake Pehoé, Torres del Paine National Park, Chile
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Squirrel Appreciation Day
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The persistence of Perito Moreno
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A day of service for Dr. King
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Wild lupines
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Asian American and Pacific Islander Heritage Month
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Over the boardwalk
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National Park Week: Haleakalā National Park, Hawaii
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Have fun storming the castle
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Into the woods
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Astronomy Day
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Dashing through the snow
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Maldives
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Innerdalsvatna Lake, near Ålvundeidet, Norway