Edited by Caleb Scholtens, some rights reserved (CC0)
Photo Credits
- 1. (c) Michael Kauffmann, some rights reserved (CC BY-ND), uploaded by Michael Kauffmann
- 2. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 3. (c) Denis Doucet, some rights reserved (CC BY-NC), uploaded by Denis Doucet
- 4. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
- 5. (c) Stuart Tingley, some rights reserved (CC BY-NC), uploaded by Stuart Tingley
- 6. (c) Steve Wells, some rights reserved (CC BY-NC), uploaded by Steve Wells
- 7. (c) Katja Schulz, some rights reserved (CC BY)
- 8. (c) Don Sutherland, some rights reserved (CC BY-NC), uploaded by Don Sutherland
- 9. (c) psweet, some rights reserved (CC BY-SA), uploaded by psweet
- 10. (c) Tanya Taylor, some rights reserved (CC BY-NC), uploaded by Tanya Taylor
- 11. (c) Jeffrey H. Skevington, some rights reserved (CC BY-NC), uploaded by Jeffrey H. Skevington
- 12. (c) Eric Knopf, some rights reserved (CC BY-NC), uploaded by Eric Knopf
- 13. (c) Donají Graham, some rights reserved (CC BY-NC), uploaded by Donají Graham
- 14. (c) Karen Yukich, some rights reserved (CC BY-NC), uploaded by Karen Yukich
- 15. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 16. (c) cotinis, some rights reserved (CC BY-NC), uploaded by cotinis
- 17. (c) Wayne Fidler, some rights reserved (CC BY-NC), uploaded by Wayne Fidler
- 18. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
- 19. (c) Sharleen, some rights reserved (CC BY-NC), uploaded by Sharleen
- 20. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 21. (c) jmmaes, some rights reserved (CC BY-SA), uploaded by jmmaes
- 22. (c) Brandt Magic, some rights reserved (CC BY-NC), uploaded by Brandt Magic
- 23. (c) adriscoll, some rights reserved (CC BY-NC), uploaded by adriscoll
- 24. no rights reserved, uploaded by calinsdad
- 25. (c) jefferykarafa, some rights reserved (CC BY-NC), uploaded by jefferykarafa
- 26. (c) Mark Olivier, some rights reserved (CC BY-NC), uploaded by Mark Olivier
- 27. (c) Allan Hopkins, some rights reserved (CC BY-NC-ND)
