Christopher Joyce Christopher Joyce is a correspondent on the science desk at NPR. His stories can be heard on all of NPR's news programs, including NPR's Morning Edition, All Things Considered, and Weekend Edition.

An aggressive encounter between two male greater prairie chickens (Tympanuchus cupido). During aggressive encounters, males leap into the air and strike their opponent with feet, wings and/or beak. Fort Pierre National Grassland, South Dakota. Gerrit Vyn/gerritvynphoto.com hide caption

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Gerrit Vyn/gerritvynphoto.com

Grunts And Gurgles Signal Love For Grouse

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Senate Unveils Plan To Reduce Emissions

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A stunning golden tapestry woven from spider silk is unveiled at the American Museum of Natural History in New York City after four years of work — and the help of more than 1 million spiders. R. Mickens/AMNH hide caption

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R. Mickens/AMNH

Spider Wranglers Weave One-Of-A-Kind Tapestry

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Even T. Rex Started Small

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A smallmouth bass caught on a lake near Ely, Minn. One-third of smallmouths surveyed by the USGS showed signs of intersex. Sam Cook hide caption

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Sam Cook

Study: Gender-Bending Fish Widespread In U.S.

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Julie Feinstein, collection manager of frozen tissue lab at AMNH, removes a rack of samples from one of the liquid nitrogen-cooled storage vats. She's wearing special gloves so that, as she puts it, she doesn't stay attached to the vat. R. Mickens/AMNH hide caption

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R. Mickens/AMNH

DNA 'Barcode' To Help Nab Illegal Wildlife Traders

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A farmer plants soybeans in an untilled field. No-till farming, in which crops are planted into last year's field stubble without plowing, has gained acceptance in the past two decades as a way to build organic matter, reduce erosion and control pesticides and fertilizers. J.D. Pooley/AP hide caption

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J.D. Pooley/AP

Can Dirt Really Save Us From Global Warming?

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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

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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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