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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First day of autumn
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Megalong Valley, Blue Mountains National Park, Australia
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At the gates of the ksar
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Combating extinction with citizen science
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’Chess on ice’
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The birthplace of Cinco de Mayo
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It s harvest time on World Food Day
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Diwali lights in Guwahati, India
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Victory Day in Valletta
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Oh, the places you’ll go
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Happy Pi Day!
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Ceremony Hall at Sweden s Icehotel
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Everglades National Park turns 75
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Sunlight sets Iceland s Eyjafjallajökull aglow
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Colosseum, Rome, Italy
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Racing toward history
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Groovy!
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Kirkilai lakes, Biržai Regional Park, Lithuania
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Whanganui National Park, Retaruke, New Zealand
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Unearthing a queen s lost tale
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Here’s looking at you, teachers
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International Geodiversity Day
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Fibonacci Day
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A storied trail marks a century
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World Teachers Day
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Irohazaka Road in fall, Nikko, Tochigi, Japan
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Travel Sunday: Liverpool
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National Panda Day
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National Museum of African American History and Culture
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Frozen fun in the Canadian cold
Bing Wallpaper Gallery

