Edited by Peter N Dudley, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 2. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 3. (c) Mike Baird, some rights reserved (CC BY)
- 4. (c) Alan R. Biggs, some rights reserved (CC BY-NC-ND), uploaded by Alan R. Biggs
- 5. (c) Alvaro Jaramillo, some rights reserved (CC BY-NC), uploaded by Alvaro Jaramillo
- 6. (c) Maggie.Smith, some rights reserved (CC BY-NC)
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- 9. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 10. (c) Steve Daniels, some rights reserved (CC BY-NC), uploaded by Steve Daniels
- 11. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 12. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
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- 14. (c) Steve Lew, some rights reserved (CC BY-NC-SA)
- 15. (c) J. N. Stuart, some rights reserved (CC BY-NC-ND)
- 16. (c) Stewart and Vickie Carrington, some rights reserved (CC BY-NC-ND)
- 17. (c) David Hofmann, some rights reserved (CC BY-NC-ND)
- 18. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- 19. (c) Joe McKenna, some rights reserved (CC BY-NC-ND)
- 20. (c) Michael Webber, some rights reserved (CC BY-NC-SA)
- 21. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
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- 23. (c) Dan Dzurisin, some rights reserved (CC BY-NC-ND)
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- 25. (c) Warren Cronan, some rights reserved (CC BY-NC), uploaded by Warren Cronan
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- 27. (c) Franco Folini, some rights reserved (CC BY)
- 28. (c) Georgia Coleman, some rights reserved (CC BY-NC), uploaded by Georgia Coleman
- 29. (c) Stephanie Marsh, some rights reserved (CC BY-NC), uploaded by Stephanie Marsh
- 30. (c) Sean McCann, some rights reserved (CC BY-NC-SA)
- 31. (c) Sarka Martinez, some rights reserved (CC BY-NC-SA), uploaded by Sarka Martinez
- 32. (c) John Barkla, some rights reserved (CC BY), uploaded by John Barkla
- 33. (c) Ken-ichi Ueda, some rights reserved (CC BY)
- 34. (c) acorbit, some rights reserved (CC BY-NC)
- 35. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 36. (c) Don Loarie, some rights reserved (CC BY)
- 37. (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
- 38. (c) Steven Pavlov, some rights reserved (CC BY-SA)
- 39. (c) Todd Fitzgerald, some rights reserved (CC BY-NC), uploaded by Todd Fitzgerald
- 40. (c) Franco Folini, some rights reserved (CC BY-SA)
- 41. (c) M.E. Sanseverino, some rights reserved (CC BY-NC-ND)
- 42. (c) Jill Matsuyama, some rights reserved (CC BY-NC-SA)
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- 59. (c) Ray Martínez Jiménez, some rights reserved (CC BY-NC), uploaded by Ray Martínez Jiménez
- 60. (c) Marshal Hedin, some rights reserved (CC BY-NC-SA)
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- 65. (c) Bill Bouton, some rights reserved (CC BY-NC)
- 66. (c) joe_cutler, some rights reserved (CC BY-NC)
- 67. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
- 68. (c) Todd Pierson, some rights reserved (CC BY-NC-SA)
- 69. (c) Glen Peterson, some rights reserved (CC BY-NC-SA)
- 70. (c) Marshal Hedin, some rights reserved (CC BY-NC-SA), uploaded by Marshal Hedin
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- 72. (c) Marshal Hedin, some rights reserved (CC BY)
- 73. (c) Kerry Matz, some rights reserved (CC BY-NC-SA)
- 74. (c) J Brew, some rights reserved (CC BY-NC-SA)
- 75. (c) Alan Vernon, some rights reserved (CC BY)