By the Numbers. Pantanal, Brazil An “88” butterfly (Diaethria neglecta) in Brazil’s Pantanal displays the design of lines and dots on its hindwing undersides that gave it its unusual common name. Photograph by Joel Sartore

 

A Gem in the Outback Uluru Kata Tjuta National Park, Northern Territory, Australia: The summit of a baking ochre stone gleams in the sun. Kata Juta, also known as Mount Olga, is one of 36 domes composed of conglomerate, a sedimentary rock. Photograph by Jason Edwards