Edited by Sara L Giles, some rights reserved (CC0)
Photo Credits
- 1. (c) Dr. Alison Northup, some rights reserved (CC BY), uploaded by Dr. Alison Northup
- 2. (c) H. Krisp, some rights reserved (CC BY)
- 3. (c) kathawk, some rights reserved (CC BY-NC), uploaded by kathawk
- 4. (c) L S, some rights reserved (CC BY-NC)
- 5. (c) natomapaul, some rights reserved (CC BY-NC)
- 6. (c) Sarah Richardson, some rights reserved (CC BY-NC), uploaded by Sarah Richardson
- 7. (c) kim fleming, some rights reserved (CC BY-NC-SA)
- 8. (c) Aleksandr Ebel, some rights reserved (CC BY-NC), uploaded by Aleksandr Ebel
- 9. (c) Blaine T. Spellman, some rights reserved (CC BY-NC), uploaded by Blaine T. Spellman
- 10. (c) Davide Puddu, some rights reserved (CC BY-NC), uploaded by Davide Puddu
- 11. (c) manual crank, some rights reserved (CC BY-NC-SA)
- 12. (c) Reiner Richter, some rights reserved (CC BY-NC-SA), uploaded by Reiner Richter
- 13. (c) Fluff Berger, some rights reserved (CC BY-SA), uploaded by Fluff Berger
- 14. (c) mister_bumble, some rights reserved (CC BY), uploaded by mister_bumble
- 15. (c) Susan Elliott, some rights reserved (CC BY-NC), uploaded by Susan Elliott
- 16. (c) Stephanie S, some rights reserved (CC BY-NC-SA)
- 17. (c) ConwaySuz, some rights reserved (CC BY-NC-ND)
- 18. (c) Damon Tighe, some rights reserved (CC BY-NC), uploaded by Damon Tighe
- 19. (c) Nikolett Tóth, some rights reserved (CC BY-NC), uploaded by Nikolett Tóth
- 20. (c) Steve Reekie, some rights reserved (CC BY-NC), uploaded by Steve Reekie
- 21. (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar
- 22. (c) Joe Bartok, some rights reserved (CC BY-NC), uploaded by Joe Bartok