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Grades 3-5

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Online Resource, Article

Reefs in Crisis

Humans have harmlessly harvested coral reefs for thousands—or even hundreds of thousands—of years. So why has our behavior in recent years suddenly put reefs at risk?

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Online Resource, Article

Studying Tree Rings to Learn About Global Climate

By taking biopsy-like samples from centuries-old Siberian pines, scientists have reconstructed a 300-year record of temperature changes for the Arctic and the Northern Hemisphere.

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Young Naturalist Awards Essay

Oscawana: A Dying Lake?

2003 Young Naturalist Award-winning essay - Oscawana has all the symptoms of a dying lake. Join this seventh-grader from New York as she hunts for the culprits—and examines what can be done to restore the lake.

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