Arid grasslands once covered significant parts of the Southwestern states — as much as 24 million acres in Arizona, for example. American pronghorn were widespread in these open spaces, along with many other grassland-dependent wildlife species.
On Sept. 3, 1964, President Lyndon Johnson signed the National Wilderness Preservation System Act. With the stroke of a pen, 9 million acres of federal land in the United States was designated as wilderness — with a capital “W.”
One of the enduring mysteries of the Colorado Plateau is why the area’s ancient Puebloan population dropped to almost zero in the late 13th century, after peaking at as many as 40,000 people just 30 years earlier.
On the Colorado Plateau, life begins anew when the monsoon rains come — especially for native amphibians like the northern leopard frog. This beautiful, spotted, greenish-brown frog pays close attention to moisture, and starts to move on humid days and rainy nights.
In late May of this year, wildfire swept through upper Oak Creek Canyon in northern Arizona. By the time firefighters contained it in early June, the Slide Fire had burned some 22,000 acres of chaparral, mixed conifers, and ponderosa pine forest.