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  1. Brown Bear, Grizzly Bear, Sow With Cubs, Katmai National Park, Alaskan Peninsula
  2. Oregon, Portland. Sunlight casts shadows through hazelnut trees and dust in orchard
  3. Spirit bear, kermode, black bear, sow, British Columbia coast, Canada
  4. Sugar Crystals, SEM
  5. Ox Horn, Polarised Light Microscopy
  6. Intricate formations in the wondrous, Carlsbad Caverns National Park, New Mexico
  7. Oregon. Columnar basalt covered with lichen along North Umpqua River
  8. Dall sheep ram resting on Mount Margaret, Denali National Park, Interior, Alaska
  9. Dall sheep ewe on Mount Margaret, Denali National Park, Interior, Alaska
  10. Spirit bear, black bear, sow walking, British Columbia coast, Canada
  11. Mountain Goat kids at Exit Glacier, Kenai Fjords National Park, Alaska
  12. Dall sheep rams on Mount Margaret, Denali National Park, interior of Alaska
  13. Brown bear footprints, Katmai National Park, Alaskan peninsula
  14. Caribou with Mount McKinley, Denali National Park, Interior, Alaska
  15. Brown bear, spring cubs, Katmai National Park, Alaskan peninsula
  16. Oregon, Portland. Evening light on glass towers of the Oregon Convention Center
  17. Spirit bear, black bear, sow walking on a log, central British Columbia coast, Canada
  18. Handmade Musical Instruments, Chania, Crete, Greece
  19. Dall sheep pair foraging on a snow-covered hillside in Denali National Park, Alaska
  20. Blood Smear, Light Micrograph
  21. Grizzly bear, with rare blond bear, Katmai National Park, Alaskan peninsula
  22. Diatom Diversity, SEM
  23. Diatom Diversity, SEM
  24. Colourful alleyway and entrance to Taverna Larenzo, Rethymnon Old Town, Crete, Greece
  25. Polar Bears sleeping on the pack ice, Arctic National Wildlife Refuge, Alaska
  26. Phosphate Crystal, SEM
  27. Spirit bear, Kermode, sow with cub looking for salmon, central British Columbia coast
  28. Spirit bear, black bear, sow and cub walking on a log, British Columbia Coast, Canada
  29. Dall sheep ram and ewe on Mount Margaret, Denali National Park, Interior, Alaska
  30. Spirit bear, black bear, sow with cub walking on log, British Columbia, Canada
  31. Polar Bear Sow With Newborn Spring Cubs, Canning River, Alaska
  32. Thousands of migrating snow geese, wintering in New Mexico
  33. Polychrome Pass Along The Kantishna Wilderness Trail In Denali National Park, Alaska
  34. Spirit bear, Kermode, walking along a beach looking for salmon, central British Columbia
  35. Polar bear footprints on the pack ice of the frozen coastal plain, Alaska
  36. Dall Sheep ram resting on a hillside, Mount Margaret, Denali National Park, Alaska
  37. Sun Protective Material, SEM
  38. Common Furniture Beetle
  39. Scenic View Of Alaska Range And Kantishna Wilderness Trail In Denali National Park
  40. Polar bear on pack ice of frozen coastal plain, Arctic National Wildlife Refuge, Alaska
  41. Polar Bear playing with her newborn spring cubs outside their den, Alaska
  42. Polar bear on the pack ice, 1002 area of the Arctic National Wildlife Refuge, Alaska
  43. Juvenile snowy owl on a beach along the arctic coast, Alaska
  44. Porcupine Quill, Light Micrograph
  45. Uric Acid Crystals, SEM
  46. Oral Bacteria, SEM
  47. Colorectal Cancer Cell, SEM
  48. Spirit bear, kermode, black bear, sow with cubs, British Columbia coast, Canada