For years, researchers have believed that climate change may be driving American pika populations from mountainous regions in the American West. A study released last week further confirms their ...

Populations of a small rabbit-like animal known as the American pika are vanishing in many mountainous areas of the West as climate change alters its habitat, according to findings of a study released ...

The American pika, a small mammal adapted to high altitudes and cold temperatures, has died out from a 64-square-mile span of habitat in California's northern Sierra Nevada mountains, and the cause ...

The American pika, a small mammal adapted to high altitudes and cold temperatures, has died out from a 165-square-mile span of habitat in California's northern Sierra Nevada mountains, and the cause ...