Edited by Rachel Bosley and Alistair MacKenzie, M. Sc., some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Sokolov Yuriy Ivanovich, some rights reserved (CC BY-NC), uploaded by Sokolov Yuriy Ivanovich
- 2. (c) jonathantellerelsberg, some rights reserved (CC BY-NC-SA)
- 3. (c) Kari Pihlaviita, some rights reserved (CC BY-NC), uploaded by Kari Pihlaviita
- 4. (c) Erik Attaway, some rights reserved (CC BY-NC), uploaded by Erik Attaway
- 5. (c) Robert Coulombe, some rights reserved (CC BY-SA)
- 6. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
- 7. (c) Vladimir Travkin, some rights reserved (CC BY-NC), uploaded by Vladimir Travkin
- 8. (c) mycowalt, some rights reserved (CC BY-SA), uploaded by mycowalt
- 9. (c) Gabe T, some rights reserved (CC BY-NC-ND), uploaded by Gabe T
- 10. (c) Marlo Perdicas, some rights reserved (CC BY), uploaded by Marlo Perdicas
- 11. (c) woodhaunt, some rights reserved (CC BY-NC), uploaded by woodhaunt
- 12. (c) jungvari, some rights reserved (CC BY-NC)
- 13. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
- 14. (c) jbushman, some rights reserved (CC BY-NC)
- 15. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 16. (c) Linda Gail Price, some rights reserved (CC BY-NC), uploaded by Linda Gail Price