Edited by Jarrett Wansley, Alison Loar, and kgallen, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) J. Martin, some rights reserved (CC BY-NC)
- 2. (c) Patrick Coin, some rights reserved (CC BY-NC-SA)
- 3. (c) Josh More, some rights reserved (CC BY-NC-ND)
- 4. Wikimedia Commons, no known copyright restrictions (public domain)
- 5. (c) Davide, some rights reserved (CC BY-SA)
- 6. (c) Stephen Durrenberger, some rights reserved (CC BY-NC-ND)
- 7. (c) Gilles Gonthier, some rights reserved (CC BY)
- 8. (c) matt knoth, some rights reserved (CC BY-NC-ND)
- 9. (c) Diddlecome Dawcock, some rights reserved (CC BY-NC-ND)
- 10. (c) Anna Wójtowicz, some rights reserved (CC BY-SA)
- 11. (c) James Marvin Phelps, some rights reserved (CC BY-NC)
- 12. (c) Picasa, some rights reserved (CC BY-NC-SA)
- 13. (c) Diotime1 (Diotime), some rights reserved (CC BY-SA)
- 14. (c) Jessie Hirsch, some rights reserved (CC BY)
- 15. (c) leppyone, some rights reserved (CC BY)
- 16. (c) Minette, some rights reserved (CC BY-NC)
- 17. (c) cyric, some rights reserved (CC BY-NC-SA), uploaded by cyric
- 18. Centers for Disease Control and Prevention (presumably), no known copyright restrictions (public domain)
- 19. USDA Forest Service, Southern Research Station, no known copyright restrictions (public domain)
- 20. (c) Reinhard Kraasch, some rights reserved (CC BY-SA)
- 21. (c) David Friel, some rights reserved (CC BY)
- 22. (c) Kenneth Catania, Vanderbilt University, some rights reserved (CC BY-SA)
- 23. (c) Yathin, some rights reserved (CC BY-NC-ND)