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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
Slideshow

Zooxanthellae and Coral Bleaching

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Compare the healthy coral on the left with the bleached coral on the right.
Photo

Bleached Corals, Pacific Ocean

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World map during last ice age
Photo

Ice Age Map of the World

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A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.
Slideshow

Two Views of Coral Reefs: Thriving and Threatened

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A newly established black mangrove sits in a field of salt marsh near the northern limit of mangroves in Florida. Mangroves have been expanding near their northern limit in Florida and the expansion is linked to a reduction in the frequency of ex
Article

Finding Mangroves In Unexpected Places

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A large red research vessel among icy waters and snowy mountains
Article

Shipboard Life in the Antarctic

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Two nurse sharks hover over a baited cage
Lesson Plan

Frozen Out

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A screenshot from the video with a map of sea level rise.
Video

Watching Rising Seas From Space

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A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral hosts.
Article

Coral Under Pressure: Monitoring Bleaching In Real Time

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Earth as seen from a satellite.
Photo

Earth as seen from a satellite

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Worldwide, installations of solar energy doubled from 2007 to 2008. China is leading the way in solar cell production.
Photo

Installing Solar Panels

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Two nurse sharks hover over a baited cage
Lesson Plan

What is El Nino?

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