Midday temperatures in southeast Arizona soar above 100 degrees during the month of July. But relief is coming. A summer monsoon refreshes the Sonoran Desert like a second spring. Grass grows lush, wildflowers spring forth, and birds sing. Cassin’s Sparrows sing their plaintive phrases…

The dry lakebed of Owens Lake, in Eastern California, was once a major source of pollution. Today, it’s a magnet for birds like these Eared Grebes. How was Owens Lake transformed? Pete Pumphrey of Eastern Sierra Audubon, explains: “The Los Angeles Department of Water and Power was ordered…