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FOURTH NATIONAL CLIMATE ASSESSMENT

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Report in Brief

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Report in Brief (Español)

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Summary Findings

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Executive Summary Presentation

Ch. 1: Overview

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Ch. 2: Our Changing Climate

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Ch. 3: Water

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Ch. 4: Energy Supply, Delivery, and Demand

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Ch. 5: Land Cover and Land-Use Change

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Ch. 6: Forests

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Ch. 7: Ecosystems, Ecosystem Services, and Biodiversity

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Ch. 8: Coastal Effects

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Ch. 9: Oceans and Marine Resources

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Ch. 10: Agriculture and Rural Communities

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Ch. 11: Built Environment, Urban Systems, and Cities

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Ch. 12: Transportation

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Ch. 13: Air Quality

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Ch. 14: Human Health

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Ch. 15: Tribes and Indigenous Peoples

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Ch. 16: Climate Effects on U.S. International Interests

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Ch. 17: Sector Interactions, Multiple Stressors, and Complex Systems

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Ch. 18: Northeast

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Ch. 19: Southeast

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Ch. 20: U.S. Caribbean

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Ch. 21: Midwest

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Ch. 22: Northern Great Plains

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Ch. 23: Southern Great Plains

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Ch. 24: Northwest

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Ch. 25: Southwest

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Ch. 26: Alaska

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Ch. 27: Hawai‘i and U.S.-Affiliated Pacific Islands

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Ch. 28: Reducing Risks Through Adaptation Actions

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Ch. 29: Reducing Risks Through Emissions Mitigation

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Frequently Asked Questions

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Public Reviews

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Public Comments and Author Responses

Author Responses to National Academies of Sciences, Engineering, and Medicine

Review by National Academies of Sciences, Engineering, and Medicine

Response to the Academies Review