New discoveries from the Ledi-Geraru Research Project

Travel from Phoenix to the Grand Canyon's South Rim for jaw-dropping overlooks, with stops at Sedona and the Verde Valley along the way.

Float above the saguaro-studded Sonoran Desert at sunrise on a hot-air balloon flight, finished with a champagne toast.

Ride into the Sonoran Desert by open-air jeep to watch the sun set behind towering saguaro cactus and desert mountains.