Edited by Charlotte Kirchner, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Dave, some rights reserved (CC BY-NC-SA)
- 2. (c) Rich Hoyer, some rights reserved (CC BY-NC-SA), uploaded by Rich Hoyer
- 3. (c) maxb, some rights reserved (CC BY-NC), uploaded by maxb
- 4. (c) 2009 Zbyszek Boratynski, some rights reserved (CC BY)
- 5. (c) Christian Schwarz, some rights reserved (CC BY-NC), uploaded by Christian Schwarz
- 6. (c) Jakob Fahr, some rights reserved (CC BY-NC), uploaded by Jakob Fahr
- 7. (c) GRID-Arendal, some rights reserved (CC BY-NC-SA)
