Edited by Carol Blaney, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) C.V. Vick, some rights reserved (CC BY-NC-ND)
- 2. (c) Franco Folini, some rights reserved (CC BY)
- 3. (c) Mark Dennis, some rights reserved (CC BY-NC), uploaded by Mark Dennis
- 4. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 5. (c) tnewman, some rights reserved (CC BY-NC)
- 6. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 7. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 8. (c) Tony Morris, some rights reserved (CC BY-NC)
- 9. (c) Jen Goellnitz, some rights reserved (CC BY-NC)
- 10. (c) BlueRidgeKitties, some rights reserved (CC BY-NC-SA)
- 11. (c) Jean-Guy Dallaire, some rights reserved (CC BY-NC-ND)
- 12. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
- 13. (c) Matthew Salkiewicz, some rights reserved (CC BY-NC), uploaded by Matthew Salkiewicz
- 14. (c) Steve Wells, some rights reserved (CC BY-NC), uploaded by Steve Wells
- 15. (c) Marshal Hedin, some rights reserved (CC BY-NC-SA), uploaded by Marshal Hedin
- 16. (c) Joe Decruyenaere, some rights reserved (CC BY-SA)
- 17. (c) Andrés Orduño, some rights reserved (CC BY-NC), uploaded by Andrés Orduño
- 18. (c) Jonathan Ortiz Torres, some rights reserved (CC BY-NC), uploaded by Jonathan Ortiz Torres
- 19. (c) Raul Urgelles, some rights reserved (CC BY-NC), uploaded by Raul Urgelles
- 20. (c) sstevenson47, some rights reserved (CC BY-NC)
- 21. (c) Opuntia Cadereytensis, some rights reserved (CC BY-NC), uploaded by Opuntia Cadereytensis
- 22. (c) aacocucci, some rights reserved (CC BY-NC), uploaded by aacocucci
- 23. (c) Steve Jones, some rights reserved (CC BY-NC), uploaded by Steve Jones
- 24. (c) Vince Scheidt, some rights reserved (CC BY-NC), uploaded by Vince Scheidt
- 25. (c) Olivier, some rights reserved (CC BY)
- 26. (c) J Brew, some rights reserved (CC BY-SA), uploaded by J Brew
- 27. (c) Sunnetchan, some rights reserved (CC BY-NC-ND), uploaded by Sunnetchan
- 28. (c) Chris, some rights reserved (CC BY-NC), uploaded by Chris
- 29. (c) Matthieu Gauvain, some rights reserved (CC BY-NC), uploaded by Matthieu Gauvain