Edited by María Begoña García, Manuel, Ane Mujika, and Neus Ibáñez Cortina, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 2. (c) Tom Potterfield, some rights reserved (CC BY-NC-SA)
- 3. (c) Snorski, some rights reserved (CC BY)
- 4. (c) Doug Grinbergs, some rights reserved (CC BY-NC), uploaded by Doug Grinbergs
