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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Celebrating Mexico in a Cultural Capital
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International Tiger Day
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On the wings of the Wright brothers
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Bridge to infinity
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An avian predator built for the snow
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Shenandoah National Park, Virginia
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Merry Christmas!
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Take the stairs
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International Polar Bear Day
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Celebrating World Art Day
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Gemsbok in Namibian sand dunes
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Till the cows come home
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Atop the Needle of Chamonix
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So, how long till springtime?
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Black Fell in England s Lake District
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Monarch butterflies, Pismo Beach, California
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A leafy seadragon in the waters off Wool Bay, Australia
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At the gates of the ksar
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The Hermitage of Santa Justa
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A Carpathian Christmas celebration
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A timeless view of the night sky
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These laurels are hardy
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Roques de Benet, Els Ports Natural Park, Catalonia, Spain
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D-Day remembered
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Kangaroo family for National Hugging Day
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A sizzling summit hides in the clouds
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A little blue
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Father s Day
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For Hispanic Heritage Month: Out of Many, One
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Summer’s in home stretch