Edited by Sergio Castañeda, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Juan Carlos Pérez Magaña, some rights reserved (CC BY-NC), uploaded by Juan Carlos Pérez Magaña
- 2. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 3. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 4. (c) JerryFriedman, some rights reserved (CC BY-SA)
- 5. (c) Secretaría de Medio Ambiente y Ordenamiento Territorial, some rights reserved (CC BY-NC), uploaded by Secretaría de Medio Ambiente y Ordenamiento Territorial
- 6. (c) Victor W Fazio III, some rights reserved (CC BY-NC-ND), uploaded by Victor W Fazio III
- 7. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 8. (c) davy, some rights reserved (CC BY-NC), uploaded by davy
- 9. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 10. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 11. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 12. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 13. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 14. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND)
- 15. (c) Pablo Lèautaud, some rights reserved (CC BY-NC-ND), uploaded by Pablo Lèautaud
- 16. (c) Michael, some rights reserved (CC BY-NC-SA)
- 17. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 18. (c) Maggie.Smith, some rights reserved (CC BY-NC)
- 19. (c) Lip Kee Yap, some rights reserved (CC BY-SA)
- 20. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
- 21. (c) eleazarbenitezmartinez, some rights reserved (CC BY-NC-SA), uploaded by eleazarbenitezmartinez
- 22. (c) Kerry Carloy, some rights reserved (CC BY-NC), uploaded by Kerry Carloy
- 23. (c) Ingrid Taylar, some rights reserved (CC BY)