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Grades 9-12

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Article

Article: Marine Species on the Line

The bulk of fishing income in The Bahamas is brought in by three species: the Nassau grouper, the queen conch, and the Caribbean spiny lobster. Find out how these overfished species are maintaining a foothold in The Bahamas.

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Article

The Ice Plant Cometh

During a July 2004 project to drill an ice core from the top of Peru's Andes Mountain, the lead researcher took a detour… and made a discovery with profound implications. Learn more.

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Article

Expedition for an Ice Core

By analyzing the relics glaciers hold — compacted snow and trapped air from ancient atmospheres, ash from long-quiet volcanoes, dust, insects, and pollen — scientists can reconstruct hundreds of thousands of years of Earth’s climate.

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Article

The Coming and Going of an Ice Age

In the past two million years alone, Earth has experienced around 20 ice ages — cycles of advance and retreat of large continental ice sheets. When is the next one due? And will global warming change that due date?

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Article

Rapid Change in a Warming World

Climate change isn’t always slow, small, and imperceptible in a human lifetime. Ice core analysis has found a single decade in which temperatures over Greenland shot up about 15 degrees Celsius.

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Article

The Climate Jump Heard 'Round The World

Scientists know that the unusual and rapid temperature jump of the Younger Dryas was felt over half the globe. But they're only now beginning to understand why.

Interactive

Interactive: Watch a Glacier Melt

Qori Kalis is the largest outlet glacier of Peru's Quelccaya ice cap. See firsthand how it (like all tropical glacier ice) is melting because of global warming.

Article

The Sorry Story of Georges Bank

Find out why this huge shoal between Massachusetts' Cape Cod and Nova Scotia's Cape Sable Island is one of the world's most important fishing resources — and why it's now at risk.

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Article, Science Bulletins

Essay: Chasing Invaders on a Water Planet

Water bodies on our planet form a network, which aquatic species migrate over evolutionary time as needed or by accident. Find out how Homo sapiens have dramatically changed and accelerated this process.

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