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Sea level rises when land sinks

land sinking

People around the world are worried about rising sea levels. Much of this increase comes from melting polar ice and ocean waters that expand as they warm. But along many coastlines, sea level rises much more than we might expect simply from changes in the ocean.

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Why is glacier ice blue?

When sunlight shines on a field of snow, it reflects a bright-even blinding-white. But if you get a good look at the leading edge of a glacier, you’ll find that the ice inside is a brilliant blue.

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Why do corals bleach?

coral

Corals have a symbiotic relationship with algae. The algae gives corals their color and provides them with food. In return, corals provide the algae with a place to live.

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