Scientists Have Big Hopes For Tiny Lasers

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Fertilizer is crucial to agricultural production, but its increasing use is leaking nitrous oxide, an ozone-deteriorating gas, into the atmosphere. iStockphoto.com hide caption

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Nitrous Oxide: A Necessary Evil Of Agriculture

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These healthy newborn monkeys, Mito and Tracker, developed from embryos containing transplanted DNA. They are named after the dye "mitotracker" used for imaging mitochondria in cells. Oregon National Primate Research Center at OHSU hide caption

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A Potential But Controversial Fix For Genetic Disease

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The Monterey Bay coastline, Northern California. In a large underwater canyon just offshore, researchers are studying the effects of increasing acidity on marine life. iStockphoto hide caption

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Acid In The Oceans: A Growing Threat To Sea Life

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A coral reef near the Caribbean island of Bonaire teems with plant and animal life. Rising water temperatures and increasing ocean acidity pose enormous threats to this wondrous but vulnerable ecosystem. Mark Vermeij hide caption

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Can Corals Survive In A Warming World?

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A longfin damselfish patrols its algae garden off the coast of Bonaire. Damselfish kill a section of the coral, and then wait for algae to grow in the dead spot. On this coral, only a few live sections remain. Henry DeBey hide caption

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Tiny Damselfish May Destroy A Caribbean Reef

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Passengers on a whale-watching ship in Massachusetts Bay. Whale watching is one of many recreational activities that draw people to the waters off the coast of Massachusetts. Kerry Crisley/The Nature Conservancy hide caption

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Zoning Busy Ocean Waters To Avoid Conflicts

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Scientists Say Some Fisheries Are Recovering

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A commercial fishing boat pulls in its net near Seattle. Strict federal fishing laws have cut back significantly on overfishing in the United States. S.Froebe/iStockphoto.com hide caption

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Imperiled Fisheries Make A Comeback, Study Shows

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Big-Beaked Toucans Play It Cool

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Climate Talks End With Meager Promises

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Obama Joins Global Warming Deal

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