Edited by Elkin René Briceño Lara, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 2. (c) Salvador Poot Villanueva, some rights reserved (CC BY-NC), uploaded by Salvador Poot Villanueva
- 3. (c) Manuel de Jesús Hernández Ancheita, some rights reserved (CC BY-NC-SA), uploaded by Manuel de Jesús Hernández Ancheita
- 4. (c) Oswaldo Hernández, some rights reserved (CC BY-NC), uploaded by Oswaldo Hernández
- 5. (c) Mike Allen, some rights reserved (CC BY-NC-SA)
- 6. (c) Elvis Jimenez, some rights reserved (CC BY-NC), uploaded by Elvis Jimenez
- 7. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 8. (c) Cullen Hanks, some rights reserved (CC BY-NC), uploaded by Cullen Hanks
- 9. (c) Edson Guilherme, some rights reserved (CC BY-NC), uploaded by Edson Guilherme
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- 11. (c) nachovallarta, some rights reserved (CC BY-NC), uploaded by nachovallarta
- 12. (c) Luiz Carlos Rocha, some rights reserved (CC BY-SA)
- 13. (c) John D Reynolds, some rights reserved (CC BY-NC), uploaded by John D Reynolds
- 14. (c) Eric Carpenter, some rights reserved (CC BY-NC), uploaded by Eric Carpenter
- 15. (c) guyincognito, some rights reserved (CC BY-NC), uploaded by guyincognito
- 16. (c) Mário Jorge Maia de Magalhães, some rights reserved (CC BY-NC), uploaded by Mário Jorge Maia de Magalhães
- 17. (c) jenarricale, some rights reserved (CC BY-NC)
- 18. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 19. (c) llsproat, some rights reserved (CC BY-NC-SA)
- 20. (c) David Schenfeld (busy), some rights reserved (CC BY-NC-ND)
- 21. (c) Tiziano Luka Pesci Rubilar, all rights reserved, uploaded by Tiziano Luka Pesci Rubilar
- 22. (c) Daniel Alexander Carrillo Mtz, some rights reserved (CC BY-NC)
- 23. (c) Paul Donahue, some rights reserved (CC BY-NC), uploaded by Paul Donahue
- 24. (c) Dan Roach, some rights reserved (CC BY-NC), uploaded by Dan Roach
- 25. no rights reserved, uploaded by Kyle Nessen
- 26. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 27. (c) terrycarr, some rights reserved (CC BY-NC)
- 28. (c) Cláudio Dias Timm, some rights reserved (CC BY-NC-SA)
- 29. (c) Carlos Sanchez, some rights reserved (CC BY-NC), uploaded by Carlos Sanchez
- 30. (c) Justina Martelli, some rights reserved (CC BY-NC), uploaded by Justina Martelli
- 31. (c) Francesco Veronesi, some rights reserved (CC BY-SA)
- 32. (c) Allan Hopkins, some rights reserved (CC BY-NC-ND)
- 33. (c) jmoralesrbpc, some rights reserved (CC BY-NC), uploaded by jmoralesrbpc
- 34. (c) Geir Drange, some rights reserved (CC BY-NC), uploaded by Geir Drange
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- 36. (c) Gabriel Camilo Jaramillo Giraldo, some rights reserved (CC BY-NC-SA), uploaded by Gabriel Camilo Jaramillo Giraldo
- 37. (c) Jesús Arana, some rights reserved (CC BY-NC), uploaded by Jesús Arana
- 38. (c) Paul Bedell, some rights reserved (CC BY-SA), uploaded by Paul Bedell
- 39. (c) Ross Millikan, some rights reserved (CC BY-NC), uploaded by Ross Millikan
- 40. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 41. (c) Cláudio Dias Timm, some rights reserved (CC BY-NC-SA)
- 42. (c) Ad Konings, some rights reserved (CC BY-NC), uploaded by Ad Konings
- 43. (c) Wagner Machado Carlos Lemes, some rights reserved (CC BY)
- 44. (c) Filipe J Ribeiro, some rights reserved (CC BY-NC), uploaded by Filipe J Ribeiro
- 45. (c) Ken Chamberlain, some rights reserved (CC BY-NC), uploaded by Ken Chamberlain
- 46. (c) Nelson Wisnik, some rights reserved (CC BY-NC), uploaded by Nelson Wisnik
- 47. (c) Dario Sanches, some rights reserved (CC BY-SA)
- 48. (c) RichX 915, some rights reserved (CC BY-NC), uploaded by RichX 915
- 49. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 50. (c) Francesco Veronesi, some rights reserved (CC BY-NC-SA)
- 51. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 52. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 53. (c) Aitor, some rights reserved (CC BY), uploaded by Aitor
- 54. (c) Alejandro Bayer Tamayo, some rights reserved (CC BY-SA)
- 55. (c) David Monroy R, some rights reserved (CC BY-NC), uploaded by David Monroy R
- 56. (c) Instituto Últimos Refúgios, some rights reserved (CC BY-NC), uploaded by Instituto Últimos Refúgios
- 57. (c) Trisha Shears, some rights reserved (CC BY-SA)
- 58. (c) Jason Headley, some rights reserved (CC BY-NC), uploaded by Jason Headley
- 59. (c) Todd Boland, some rights reserved (CC BY-NC), uploaded by Todd Boland
- 60. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 61. (c) Judy Gallagher, some rights reserved (CC BY)
- 62. (c) Chris Harrison, some rights reserved (CC BY-NC), uploaded by Chris Harrison
- 63. (c) Jerome Foster, some rights reserved (CC BY-NC-ND), uploaded by Jerome Foster