Edited by Rachel Bosley and Alistair MacKenzie, M. Sc., some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Annelie Burghause, some rights reserved (CC BY-NC-SA)
- 2. (c) Drow_male, some rights reserved (CC BY-SA)
- 3. (c) Cailin O'Connor, some rights reserved (CC BY-NC), uploaded by Cailin O'Connor
- 4. (c) Amadej Trnkoczy, some rights reserved (CC BY-NC-SA)
- 5. (c) Susan J. Hewitt, some rights reserved (CC BY-NC), uploaded by Susan J. Hewitt
- 6. (c) Vitaly Charny, some rights reserved (CC BY-NC), uploaded by Vitaly Charny
- 7. (c) Richard Droker, some rights reserved (CC BY-NC-ND)
- 8. (c) Jason Hollinger, some rights reserved (CC BY)
- 9. (c) Mark Nofsinger, some rights reserved (CC BY-NC), uploaded by Mark Nofsinger
- 10. (c) Sarka Martinez, some rights reserved (CC BY-NC-SA), uploaded by Sarka Martinez
- 11. (c) Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker
- 12. no rights reserved, uploaded by Tomas Pocius
- 13. (c) javiehweg, some rights reserved (CC BY-NC-SA), uploaded by javiehweg
- 14. (c) kendallbrooke, some rights reserved (CC BY-NC), uploaded by kendallbrooke
- 15. no rights reserved, uploaded by Ken Kneidel