The federal government is protecting a small group of Alaskan beluga whales before it gets any smaller.
Divers in Australian reefs tallied hundreds of species new to science.
Roads, buildings, and other new development alter aquatic life in local streams.
A new survey doubles the existing number of western lowland gorillas.
UNESCO has added eight new sites to its list of irreplaceable natural habitats.
Some reptiles and amphibians that live on Madagascar’s highest peaks could face extinction.
When forests vanish, seed-spreading animals can come to the rescue.
When one link in Yosemite’s food web falters, the effects cascade.
Clearing of Myanmar's lush mangrove forests worsened the damage from Cyclone Nargis.
Conservationists reintroduce a native species to its home.