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.

EPA Clean Air Rules

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EPA Eases Clean Air Rules for Older Plants

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Probe Digs into Iraq's History of Torture

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Listening to Animals

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Study Suggests Ocean Once Teemed with Whales

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White House Sets Climate Research Goals

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Study Finds Trees Grow Faster in New York City

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New Twist in Controlling Greenhouse Gases

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U.S. to Probe Mass Graves in Iraq

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Oldest Human Fossils Found

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American Forces Seek to Collect Iraqi Small Arms

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U.S. Disbands Iraqi Military

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