Edited by Jeff Caplan, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 2. (c) Jeff Caplan, all rights reserved, uploaded by Jeff Caplan
- 3. (c) Anne Parsons, some rights reserved (CC BY-NC), uploaded by Anne Parsons
- 4. (c) Rick Leche - Photography, some rights reserved (CC BY-NC-ND)
- 5. (c) Doug Greenberg, some rights reserved (CC BY-NC-ND)
- 6. (c) Len Blumin, some rights reserved (CC BY)
- 7. (c) davidcooksy, some rights reserved (CC BY-NC)
- 8. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 9. (c) Isidro Vila Verde, some rights reserved (CC BY-NC-ND)
- 10. (c) Richard Wottrich, some rights reserved (CC BY-NC), uploaded by Richard Wottrich
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- 12. (c) jschweg, some rights reserved (CC BY-NC), uploaded by jschweg
- 13. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
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- 15. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
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- 17. (c) Warren Cronan, some rights reserved (CC BY-NC), uploaded by Warren Cronan
- 18. (c) matt knoth, some rights reserved (CC BY-NC-ND)
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- 21. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
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- 29. (c) Becky Matsubara, some rights reserved (CC BY)
- 30. (c) Mike Hannisian, some rights reserved (CC BY-NC), uploaded by Mike Hannisian
- 31. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 32. (c) Dennis Church, some rights reserved (CC BY-NC-ND)
- 33. (c) Doug Greenberg, some rights reserved (CC BY-NC)
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- 35. (c) Blake Matheson, some rights reserved (CC BY-NC)
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- 37. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 38. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 39. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 40. (c) Dmitry Mozzherin, some rights reserved (CC BY-NC-SA)
- 41. (c) Alan R. Biggs, some rights reserved (CC BY-NC-ND), uploaded by Alan R. Biggs
- 42. (c) rbbrummitt, some rights reserved (CC BY-NC), uploaded by rbbrummitt
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- 50. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 51. (c) Matt K, some rights reserved (CC BY-NC), uploaded by Matt K
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- 53. (c) Gavan Watson, some rights reserved (CC BY-NC-SA)
- 54. (c) Steven Bach, some rights reserved (CC BY-NC-SA), uploaded by Steven Bach
