John Nielsen John Nielsen covers environmental issues for NPR. His reports air regularly on NPR's award-winning news magazines, All Things Considered, Morning Edition and Weekend Edition. He also prepares documentaries for the NPR/National Geographic Radio Expeditions series, which is heard regularly on Morning Edition. Nielsen also occasionally serves as the substitute host for several NPR News programs.
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John Nielsen

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The Salton Sea in 2000, when rising water flooded nearby brush. The water is red with micro-organisms. Getty Images hide caption

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'Farm To City' Deal To Dry Out Stretches Of California's Legendary Salton Sea

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'Dead Zones' Multiplying In World's Oceans

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'Mother Lode' Of Gorillas Found In Congo Forests

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Democrats Call For Probe Of EPA Chief's Testimony

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Plan To Stop Right Whales From Striking Ships Stuck

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Federal Conservation Program At Risk

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EPA Won't Regulate Greenhouse Gases

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Study: Global Coral Crisis Is In Full Bloom

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Unlikely Heroes: Goats Rescue N.Y. Bog Turtles

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Bush Eyes Unprecedented Conservation Program

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White House Lists Polar Bears as 'Threatened'

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Polar Bear Endangerment Decision Looms

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Warming Waters Threaten 'Unicorns of the Sea'

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Beetle Infestation Compounds Effects of Warming

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Flood Experts Say East, Midwest Primed for Disaster

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