Edited by Jorge Emmanuel Escobar, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Thomas Stromberg, some rights reserved (CC BY-NC)
- 2. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 3. (c) Jei Pov, some rights reserved (CC BY-NC-SA)
- 4. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 5. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 6. (c) Félix Uribe, some rights reserved (CC BY-SA)
- 7. no rights reserved, uploaded by Diego Carús
- 8. (c) Dario Sanches, some rights reserved (CC BY-SA)
- 9. (c) Kentish Plumber, some rights reserved (CC BY-NC-ND)
- 10. (c) cgalvis, some rights reserved (CC BY-NC)
- 11. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 12. (c) Gustavo Morejon Jaramillo, some rights reserved (CC BY-NC), uploaded by Gustavo Morejon Jaramillo
- 13. (c) Christoph Moning, some rights reserved (CC BY), uploaded by Christoph Moning
- 14. (c) Antonio Arnaiz-Villena, Valentin Ruiz-del-Valle, some rights reserved (CC BY-SA)
- 15. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 16. (c) Taran Rampersad, some rights reserved (CC BY-NC-SA)
