Florida considers bounty hunters to deal with pythons, which threaten people and endangered native species.
Scientists released guppies into two rivers to see which would survive.
Scientists have long wondered if animals migrated to Ellesmere Island seasonally or stayed throughout the year. Now, they have some clues.
Scientists reveal the effect of fishing on cod size and question turning crops into fuel.
Degraded landscapes can be returned to natural beauty and usefulness.
Deforestation destroys the habitat of the largest animal to live primarily in trees.
While dodging bullets and spears of poachers and rebels, Virunga National Park ranger Innocent Mburanumwe can put a 700-pound gorilla at ease with a few strategic grunts.
Climate change, oil spills imperil birds, according to landmark report.
Climate change is pushing marine animals out of their protected areas. Ways must be found to ensure that their protection migrates with them, naturalists say.
As lethal fungus spreads, captive amphibians are bred for eventual return to the wild.
Policy on vast public lands has favored ranchers. Demographics and economics may alter that equation now.
Heat-tolerant algae could help the world's reefs adapt to climate change, researcher says.
By grazing them in a way that mimics the pattern of wild herbivores, advocates say, rangeland improves.
Effect of natural drought cycle and climate change is restoration of the grasslands of centuries ago.
Home builders want the dead trees, but activists and regulations stand in the way.
Together with earlier moves, 355,000 square miles of islands, reefs, and atolls now have new safeguards.
Agencies can’t agree on a definition, which hobbles preservation efforts.
New Mexico program faces higher hurdles than similar one in Yellowstone.
The Atlanta Botanical Garden is among the public gardens working to ensure the survival of threatened and endangered plants.
Lobbied by concerned students, the state created a critter-friendly underpass.