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Green Tree Frogs
Photograph by John Eastcott and Yva Momatiuk
In a nocturnal rendezvous, two green tree frogs meet face-to-face atop a leaf in Louisiana's Atchafalaya River Delta. Green may be the most common color found in nature—it's everywhere from leaves, grass, and moss to snakes, butterflies, and even the northern lights. Green represents life, vitality, nature, and, of course, environmentalism.
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Frog on Lily Pad
Photograph by James P. Blair
A green frog sits atop a large lily pad in the waters of Atchafalaya Delta. Although this croaker is a bayou-dweller, its species thrives as far north as Canada.
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Northern Lights
Photograph by Paul Nicklen
The northern lights, or aurora borealis, produce a brilliant display in the skies near Yellowknife, Northwest Territories, Canada. The phenomenon is produced by the action of solar wind on the atmosphere at Earth's Poles.
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Cave Mouth Silhouette
Photograph by Raymond Gehman
A pool of water at the mouth of Rio Frio Cave reflects the greenery of Belize’s Chiquibul Forest and frames a visitor in silhouette. The easily accessible river cave is a popular attraction.
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Green Tree Snake
Photograph by Michael Nichols
A green tree snake peers from its leafy perch in Costa Rica’s Caribbean lowland. These tropical rain forests surround the famed La Selva Biological Station, a center for ecological research.
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Riverbank Butterflies
Photograph by Joel Sartore
Leaf-green pierid alight on the sandy shores of the Tuichi River in Bolivia's Madidi National Park. The vast Madidi wilderness encompasses a staggering range of ecosystems—from snowcapped Andean peaks to tropical Amazonian lowlands.
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Vietnamese Cyclists
Photograph by Justin Guariglia
Two boys share a nighttime bicycle ride down the darkened streets of Hoi An, Vietnam. The city's old town is a World Heritage site filled with historic buildings from the 15th to 19th centuries.
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Windy Grassland
Photograph by Raymond Gehman
Lush, green grasses wave to and fro in the wind. Various types of grasslands once covered about half of the continental United States, but today they are found in only a fraction of that area.
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Picking Tea Leaves
Photograph by George Mobley
A Japanese tea farmer picks leaves in a verdant field in central Japan's mountainous Nara Prefecture. Tea has a long history in Japan but was first brought to the islands from China.
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White Alligator
Photograph by Joel Sartore
A rare white alligator swims at the Audubon Zoo in New Orleans. Albino gators are ill suited for life in the wild because their pale skin offers little protection from the sun.
