Arizona Saguaro

Saguaros face heat, drought and changing monsoons. Researchers say these iconic desert giants manage to endure and thrive.

The saguaros were already stressed from record-breaking heat three years ago, and this summer's historic heat turned out to be the cactus needle that broke the camel's back.

The Arizona Game and Fish Department says it has spotted bald eagles nesting in a saguaro cactus for the first time in several decades.Wildlife managers…