Renewable Energy Needs Land, Lots Of Land

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The coats of domestic dogs vary wildly and can be long, short, straight, wavy, curly or more. Pictured here (left to right) are three breeds with different coat types: Saluki, Vizsla and Samoyed. Tyrone Spady hide caption

toggle caption Tyrone Spady

Dog Hair May Shed Light On Cancer

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For Early Man, It Wasn't Easier Being Green

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Early Human Lessons: Hot Rocks Make Sharper Tools

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Critics Say 'Clunkers' Program Isn't Very Green

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When Rain Falls On Snow, Arctic Animals May Starve

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Moths Outwit Bats By Jamming Sonar

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Climate Change Bill Postponed By Senate

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Fossil Hunters Uncover Rare Dinosaur Skin

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1,000-Page Bill Attracts Lobbyists To Energy Plan

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As Fences Cut Off Migration, Hoofed Species Decline

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Alpha Bison: The Quieter Bellow Wins The Females

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Larger Populations Triggered Stone Age Learning

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