Edited by Rachel Bosley and Alistair MacKenzie, M. Sc., some rights reserved (CC BY-SA)
Photo Credits
- 1. no rights reserved, uploaded by Ken Kneidel
- 2. (c) jungvari, some rights reserved (CC BY-NC)
- 3. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
- 4. no rights reserved, uploaded by Garrett Taylor
- 5. (c) mycowalt, some rights reserved (CC BY-SA), uploaded by mycowalt
- 6. (c) Timothy Frey, some rights reserved (CC BY-NC), uploaded by Timothy Frey
- 7. (c) Catherine Rankovic, some rights reserved (CC BY-NC-ND)
- 8. (c) Don Sutherland, some rights reserved (CC BY-NC), uploaded by Don Sutherland
- 9. (c) Leo Papandreou, some rights reserved (CC BY-NC-SA)
- 10. (c) Tom Walker, some rights reserved (CC BY-NC), uploaded by Tom Walker
- 11. (c) Cathy Murray, some rights reserved (CC BY-NC), uploaded by Cathy Murray
- 12. (c) Tatiana Bulyonkova, some rights reserved (CC BY-NC-SA)
- 13. (c) Jason Hollinger, some rights reserved (CC BY)
- 14. (c) Dan Antonaccio, some rights reserved (CC BY-NC), uploaded by Dan Antonaccio
- 15. (c) jbushman, some rights reserved (CC BY-NC)
- 16. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
- 17. (c) Mike Potts, some rights reserved (CC BY-NC-SA), uploaded by Mike Potts
- 18. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 19. (c) Gennadiy Okatov, some rights reserved (CC BY-NC), uploaded by Gennadiy Okatov
- 20. (c) Dan Molter, some rights reserved (CC BY-SA)
- 21. (c) Linda Gail Price, some rights reserved (CC BY-NC), uploaded by Linda Gail Price
- 22. (c) Fluff Berger, some rights reserved (CC BY-SA), uploaded by Fluff Berger