A new study finds that the Sonoran Desert’s iconic cactuses are suffering, not only from prolonged drought but also from ...

Researchers are concerned the declines will lessen the scale of and in some cases possibly eliminate the large saguaro forests in Arizona.

The Trust for Public Land has acquired 47 acres for Saguaro National Park, increasing the linkage to Pima County's Sweetwater Preserve.

Experts reveal the best U.S. national parks to visit around Easter, from a tranquil island escape to vibrant wildflower bloom trails.

Tucson is part of a nationwide billboard campaign criticizing the Trump administration's cuts to National Parks.

Jesika von Rabbit has a legitimate gripe. The singer-songwriter wants to know why her prepubescent niece gets more action on ...

In Arizona, it sealed off the south ends of Organ Pipe Cactus National Monument and Buenos Aires ... the Center for Biological Diversity accompanied The Arizona Republic to California Gulch, a saguaro ...

In Arizona, it sealed off the south ends of Organ Pipe Cactus National Monument ... accompanied The Arizona Republic to California Gulch, a saguaro-studded arroyo across the Pajarito Mountains ...