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  1. A solitary tepee is illuminated under a sky streaked with light from the aurora borealis, Northwest Territories, Canada
  2. Cormorant fisherman poles a bamboo raft near limestone karst mountains, Li River, People's Republic of China
  3. Virginia Creek, with a cross-country skier, Yellowstone National Park, Montana
  4. An orange-beaked great white egret hunting among wetland lily pads
  5. Banff National Park, Alberta, Canada
  6. Reelfoot National Wildlife Refuge, Dyersburg, Tennessee
  7. Pinedale, Wyoming
  8. Waterfalls on the Eno River passing through a hardwood forest
  9. Sunset and silhouetted oak tree over the Shenandoah valley
  10. A delicate and splendid rose opens up her petals
  11. A dirt road through a forest passes a large tree with Spanish moss
  12. A roaming horse in Montana
  13. A view of Death Lake and the surrounding forests and cliffs, Northwest Territories, Canada
  14. Grand Teton National Park, Wyoming
  15. Kitty Hawk, Bodie Island, North Carolina
  16. A creek runs through Blue Hole Campground
  17. A view of wild horses in a field of wildflowers in the Pryor Mountains
  18. A view of a lake through trees and plants
  19. Crater Lake National Park, Oregon
  20. Prairie grass, Badlands National Park, South Dakota
  21. Bleeding heart flowers, Dicentra spectabilis, in bloom
  22. Alberta, Canada
  23. Green Gardens, Gros Morne National Park, Newfoundland, Canada
  24. Grand Teton National Park, Wyoming
  25. Upper Cascades Falls flows down a mountain in Hanging Rock State Park
  26. Boundary Waters Canoe Area Wilderness, Superior National Forest, Minnesota
  27. A close up of a bear with paw raised and claws exposed
  28. Sunlight filters through the leaves of an umbrella tree
  29. Crater Lake National Park, Oregon
  30. Rolls of hay fill a farmer's field
  31. Flaming shrubs and a slender quaking aspen against a canvas of lodgepole pine
  32. A moored old red boat and its mirror reflection on still waters
  33. An alligator floats in the afternoon sun amongst lily pads
  34. Hotspring Island, British Columbia, Canada
  35. Grand Prismatic Spring, Yellowstone National Park,Wyoming
  36. Near Lake Minnewanka, Banff National Park, Alberta, Canada
  37. A dump truck carrying gravel kicks up a cloud of dust
  38. A flock of ibis fly over the sunset colored marsh
  39. Banff National Park, Alberta, Canada
  40. Close view of bark on an old growth cottonwood tree
  41. Devil'S Tower National Monument, Wyoming
  42. A stone bridge crosses the headwaters of the Susquehanna River, New York
  43. The sun rises over an Atlantic Ocean pier
  44. Cotton grass, sedges and a red spruce forest in a bog
  45. Tree in autumn foliage on a grassy hillside with moon rising over all
  46. Lake Louise, Banff National Park, Alberta, Canada
  47. Tiger, Qinhuangdao Zoo, Hebei Province, China
  48. A Japanese cherry tree bursts forth in blossoms