A wildlife photographer waited patiently at dusk to capture a close-up portrait of a Sonoran Desert toad basking on a rocky wash.

The geologist held a small, glassy specimen of sonoraite up to the light, its yellow-green luster revealing traces of tellurium and iron.

The Sonoran Desert bursts into bloom after rare winter rains, painting the valley with bright wildflowers.

Researchers observed that Sonoran Desert toads secrete toxins when threatened.