Edited by Oskar Liset Pryds Hansen and Morten DD Hansen, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Rachel, some rights reserved (CC BY-NC-ND)
- 2. (c) Allan Hopkins, some rights reserved (CC BY-NC-ND)
- 3. (c) Laurence Livermore, some rights reserved (CC BY-NC)
- 4. (c) Jean Guérin, some rights reserved (CC BY-NC-SA)
- 5. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 6. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
- 7. (c) scarabaeus_58, some rights reserved (CC BY-NC)
- 8. (c) Aleta Rodriguez, some rights reserved (CC BY-NC-ND)
- 9. (c) Dean Morley, some rights reserved (CC BY-ND)
- 10. (c) Marcello Consolo, some rights reserved (CC BY-NC-SA)
- 11. (c) Taji, some rights reserved (CC BY), uploaded by Taji
- 12. (c) Serhiy Popoff, some rights reserved (CC BY-NC), uploaded by Serhiy Popoff
- 13. (c) Paul Ritchie, some rights reserved (CC BY-NC-ND)
- 14. (c) S. Rae, some rights reserved (CC BY)
- 15. (c) Javier Díaz Barrera, some rights reserved (CC BY-NC-ND)
- 16. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 17. (c) Drriss & Marrionn, some rights reserved (CC BY-NC-SA)
- 18. (c) Harry Harms, some rights reserved (CC BY-NC-SA)
- 19. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
- 20. (c) Jose Delgar, some rights reserved (CC BY-NC-SA)
- 21. (c) Ombrosoparacloucycle, some rights reserved (CC BY-NC-SA)