Panorama of Mammoth Peak and Kuna Crest, Yosemite National Park, California Northern lights or aurora borealis over illuminated tent, boreal forest, North America Great Horned Owl (Bubo virginianus) pale form, Kootenays, British Columbia, Canada Siberian Tiger (Panthera tigris altaica) running, native to Russia Mexican Golden Poppy flowers and cactus, Arizona Colorado River at Horseshoe Bend, Page, Arizona Opuntia (Opuntia sp) cactus, Chisos Mountains, Big Bend National Park, Texas Emperor Moth (Pavonia pavonia), Switzerland Cascades of the Iguacu Falls, Iguacu National Park, Argentina Common Sunflower (Helianthus annuus) group showing symmetrical seed heads, North America Lower Yellowstone Falls Yellowstone National Park Wyoming Pallid Bat (Antrozous pallidus) flying at night, Washington Black Bear (Ursus americanus) cub leaning against tree, Orr, Minnesota Bighorn Sheep (Ovis canadensis) male portrait, Banff National Park, Alberta, Canada Leaf with water drops, Barro Colorado Island, Panama Church and gate, El Santuario de Chimayo, New Mexico Pond reflecting Grand Tetons, Grand Teton National Park, Wyoming Quaking Aspen forest and Mount Sneffels, San Juan Mountains, Colorado Coast at dusk, Bay of Fundy, Canada Little Blue Heron wading, Everglades National Park, Florida Dutch Crocus (Crocus vernus) flower, Hoogeloon, Netherlands American Goldfinch (Carduelis tristis) in winter, Canada Eurasian Solomon's Seal detail of leaves, medicinal plant, Europe Seed diversity, Barro Colorado Island, Panama Giant Panda (Ailuropoda melanoleuca) sitting on ground, China Aspen forest overlooking Fremont Lake, Bridger-Teton National Forest, Wyoming Red Fox (Vulpes vulpes) looking out from behind trees in a snowy forest, Montana Sand Verbena (Abronia sp) flower field at sunrise in fog, Hill Country, Texas Blue Ridge Mountains from Bluff Mountain Overlook, North Carolina Great Horned Owl in its pale form perching in a snow-covered tree, British Columbia Orca (Orcinus orca) breaching along the Inside Passage, Alaska Common Dolphin pod surfacing, San Diego, California Single-leaf Pinyon Pine at Toroweap Overlook, Grand Canyon National Park, Arizona Sunset over river and peaks in Moraine Park, Rocky Mountain National Park, Colorado Common Garter Snake, native to North America Sanderling foraging on the beach, IJmuiden, Netherlands Saguaro cactus and California Poppy field, Tonto National Forest, Arizona Coastline in fog, Cape Breton Island, Nova Scotia, Canada Broad-tailed Hummingbird feeding on the nectar of a Desert Penstemon flower African Lion cubs resting on a rock, Hwange National Park, Zimbabwe, Africa La Plata and Twin Peaks reflected in Twin Lakes with a lone tree, Colorado Full moon over East Beckwith Mountain rising above fall colored Aspen forests, Colorado Orange Sneezeweed and Indian Paintbrush beside stream, Yankee Boy Basin, Colorado Billowing Clouds at Sunset North Dakota Prickly Poppy, Sand Bluebonnet, Pointed Phlox and Squaw-weed Hill Country, Texas Broadleaf forest in fall colors Shenandoah National Park, Virginia White-bellied Woodstar hummingbird male and female feeding on flower, Costa Rica Flower (Hippeatrum sp) close up showing pistil and stamens, New Zealand Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51