1.  
  2. Oracle racing sailboat in San Francisco Bay. October 2012.

     
  3. Looking South from Central Park. From Iowa Andy.

     
  4. Pencil drawing by Diego Fazio

     
  5. Petra

     
  6. Petra

     
  7. From Petra

     
  8. Graffiti in San Telmo, Buenos Aires, Argentina

     
  9. 14 turbines in a row on a wind farm in W. Nevada, USA

     
  10. Supersonic Wind Tunnel, Arnold Air Force Base, Tullahoma, TN