Science Video

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On the Mississippi between Illinois and Iowa, hundreds of bald eagles are now attracted each winter by plentiful fish in ice-free waters.

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New research shows how fragments of lead rifle bullets are poisoning eagles, bears and other wildlife that scavenge carcasses left by hunters.

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Off Alaska's coast, new research shows how entangling fishing gear and trash cause devastating consequences for Steller sea lions.

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Only a handful of the world's most endangered parrots still survive in the wild, but state and federal captive breeding programs are holding them back from extinction.

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In Appalachia, a last-minute change in mining rules by the Bush Administration affects how coal companies can dump debris in watersheds -- a major environmental impact from mountaintop-removal mining operations.

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Coal sludge spill in Tennessee threatens long-term toxic danger.

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For under a thousand dollars, a mechanic in Illinois has converted his pickup truck into a battery-powered vehicle.

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Like other big fish species worldwide, Mongolia's giant trout faces extinction.

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In the Yellowstone region, mountain lions face increasing threats from bears, wolves, and people.

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Winemakers in California's Napa Valley are switching to more sustainable, eco-friendly methods, and producing even better wines.

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In Tasmania, an infectious cancer is wiping out dwindling numbers of an iconic, feisty marsupial.

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Some U.S. lawmakers want to change regulations to allow loaded and concealed weapons in national parks.

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New Technology Saves Water

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In Mozambique, an American philanthropist has made an expensive 25-year commitment to bring a war-ravaged national park back to its former natural splendor.

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In the Northern Rockies, beetle infestation and invasive fungus are destroying ancient whitebark pine forests, with serious impacts on wildlife.

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The western United States is rich in renewable solar and wind energy, but delivering it to consumers will require huge investments in new transmission lines that could cause serious environmental impacts.

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There's wide support for giving federal protection to Snake River headwaters in Wyoming, but farmers downriver in Idaho worry this could mean less water for crops.

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Some scientists suspect that pesticides are the cause of plummeting bee populations, which could have serious consequences for pollination and production of food crops.

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Wildlife officers in Wyoming use sophisticated forensic tools to convict poachers.

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Building new bicycle pathways in Grand Teton National Park could have negative impacts on ground-nesting birds.

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With sage grouse declining across the western United States, researchers try to find out if predatory ravens are responsible.

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Conservationists say the common types of these rodents, essential to healthy grasslands, are threatened by widespread poisoning by ranchers and farmers. U.S. wildlife authorities have been reluctant to give them protection under the Endangered Species Act.