The pronghorn's seasonal journey is the longest land-mammal migration in the continental United States. But development might be closing off the creature's historic paths through the West.
A forested region in southwestern China that's home to more than 30 percent of the world's giant pandas has been named a World Heritage site by the UN.
The U.S. Space agency is testing new safety measures after Discovery struck a stray vulture—which then became a potentially damaging piece of debris—during a 2005 launch.
A finch species evolved a smaller beak in response to competition with a similar species within two decades—the first time such a change has been observed in action in the wild, researchers say.
Looking at chemical clues in the lenses of bowhead whale eyes offers evidence that the marine mammals can outlive humans by generations, biologists say.
Meerkats teach their young how to deal with scorpions and other potentially deadly prey, offering the first hard evidence of active teaching by a nonhuman mammal, scientists say.
If these dinosaurs made it past toddlerhood, they were apparently pretty safe until age 14. Then their death rates shot up dramatically, a new study says.
In compliance with an out-of-court settlement with an environmental group, the U.S. Navy began using mid-frequency sonar yesterday during exercises off Hawaii.
Be dazzled by the jewel-like colors of some of the world's threatened frogs, and learn about a proposed Amphibian Survival Alliance that would help protect species around the globe.
