'Free Parking' Comes at a Price, Author Says

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Lisa Couturier, Exploring 'The Hopes of Snakes'

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The Significance of the Ivory-Billed Woodpecker

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The Future of the Ivory-Billed Woodpecker

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Measuring the Success of River Restorations

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Ivory-Billed Woodpecker Found Not to Be Extinct

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The Ivory-Bill, Found

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Energy Plan Emphasis: Nuclear Power, Efficent Vehicles

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Ivory-Billed Woodpecker Rediscovered in Arkansas

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To the North Pole!

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New Model Promises More Accurate Hurricane Forecasts

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Environmentalist John Francis, Walking the Walk

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State of the Earth's Ecosystems

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