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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A bird of beauty
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Four Sisters, thousands of trees
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Meandering through Patagonia
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Festival of British Archaeology
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The Colosseum of Rome, Italy
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Tufa formations in Mono Lake, California
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Yarn for Distaff Day
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The dancing trees of Sumba Island
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Sitka shines on Alaska Day
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Golden Bridge, Bà Nà Hills, Da Nang, Vietnam
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It s Asian American and Pacific Islander Heritage Month
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Manarola, Cinque Terre National Park, Liguria, Italy
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Point Reyes National Seashore
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Welcome to the Year of the Pig
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The wild heart of Tasmania
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Arbor Day
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Wild scene on the Merced River
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Castle Day in Japan
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Craters of the Moon centennial
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Blue Lagoon spa, Grindavík, Iceland
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The Easter Bunny’s story
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Astronomy Day
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Happy birthday, Saguaro National Park
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A hero for the 21st century
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Whoopin it up!
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The beach at Cala Luna, Sardinia, Italy
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A day of service for Dr. King
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Winter in England s Cotswolds
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Corona Arch near Moab, Utah
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Poinsettia Day
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