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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Sand, sun, and sk8ers
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The Wall for Peace
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The first ascent
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The aftermath of a meteorite
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Old Town Quito
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Go with the rainbow flow
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Bobbio, Italy
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Wander the ancient medina
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Bluebells in Hertfordshire, England
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The town of Pienza in Tuscany, Italy
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In praise of the pipes
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The Badlands celebrates a milestone
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A river runs through it
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Devetashka Cave, Devetaki, Bulgaria
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Our Lady of the Rocks
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National Park Week: Olympic National Park, Washington
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Visiting a Maratha fortress
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A temple, preserved
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Glowworm caves in Australia
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One for the books
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Women s History Month
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World Environment Day
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Queen Elizabeth s Platinum Jubilee
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Red squirrel in Cairngorms National Park, Scotland
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Lucian Blaga National Theater, Cluj-Napoca, Romania
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Purple crocus flowers, Seven Rila Lakes, Bulgaria
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Eben Ice Caves, Upper Peninsula, Michigan
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Welcome to the drainpipe of the Pacific
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Christmas Bird Count turns 125
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New Years Eve
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