Edited by Antonio W. Salas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Alastair Rae, some rights reserved (CC BY-SA)
- 2. (c) obscurus, some rights reserved (CC BY-NC), uploaded by obscurus
- 3. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 4. (c) Nick Chill, some rights reserved (CC BY-NC-ND)
- 5. (c) Cristóbal Alvarado Minic, some rights reserved (CC BY)
- 6. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 7. (c) Sergey Pisarevskiy, some rights reserved (CC BY-NC-SA)
- 8. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
- 9. (c) Adam Dewan, some rights reserved (CC BY-NC-SA)
- 10. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 11. (c) José Antonio Linage Espinosa, some rights reserved (CC BY-NC), uploaded by José Antonio Linage Espinosa
- 12. (c) Frank Izaguirre, some rights reserved (CC BY-NC), uploaded by Frank Izaguirre
- 13. (c) marlin harms, some rights reserved (CC BY)
- 14. (c) Don Faulkner, some rights reserved (CC BY-SA)
- 15. (c) Tony Rebelo, some rights reserved (CC BY-SA), uploaded by Tony Rebelo
