Urban Garden at Chicago's O'Hare International Airport !

Add another variation to the 'ponics family:  aeroponics
http://www.smartplanet.com/blog/cities/ohare-airports-new-soil-less-garden-helps-feed-passengers/983

Some tools of the trade:
http://www.google.com/products/catalog?q=aeroponics&hl=en&client=firefox-a&hs=ZI4&rls=org.mozilla:en-US:official&prmd=imvnsb&resnum=3&bav=on.2,or.r_gc.r_pw.r_cp.&biw=1589&bih=751&um=1&ie=UTF-8&tbm=shop&cid=7415697237607472192&sa=X&ei=mnOCTp_yEOn20gHsuLyJAQ&ved=0CGcQ8gIwAA

http://www.google.com/products/catalog?q=aeroponics&hl=en&client=firefox-a&hs=ZI4&rls=org.mozilla:en-US:official&prmd=imvnsb&resnum=3&bav=on.2,or.r_gc.r_pw.r_cp.&biw=1589&bih=751&um=1&ie=UTF-8&tbm=shop&cid=10821010751498856046&sa=X&ei=mnOCTp_yEOn20gHsuLyJAQ&ved=0CG0Q8gIwAQ

"The Aerojet is Botanicare's Best Selling Expandable Hydrogarden The AEROJET is a true aeroponic system, not a deep flow hydro-aeroponic system. Microjets spray the roots of the plants allowing for aggressive growth rates due to the high levels of oxygen delivered to the root zone."
 http://www.google.com/products/catalog?q=aeroponics&hl=en&client=firefox-a&hs=ZI4&rls=org.mozilla:en-US:official&prmd=imvnsb&resnum=3&bav=on.2,or.r_gc.r_pw.r_cp.&biw=1589&bih=751&um=1&ie=UTF-8&tbm=shop&cid=9891231660679612652&sa=X&ei=mnOCTp_yEOn20gHsuLyJAQ&ved=0CHIQ8wIwAg

"The AeroFlo² 60, accommodates sixty plant sites. Growers who wish to expand this system can enjoy 120 plant sites" 
http://www.google.com/products/catalog?q=aeroponics&hl=en&client=firefox-a&hs=ZI4&rls=org.mozilla:en-US:official&prmd=imvnsb&resnum=3&bav=on.2,or.r_gc.r_pw.r_cp.&biw=1589&bih=751&um=1&ie=UTF-8&tbm=shop&cid=3889365892785694743&sa=X&ei=mnOCTp_yEOn20gHsuLyJAQ&ved=0CH0Q8gIwBA 

Parts and Supplies:
http://www.genhydro.com/genhydro_US/parts_aeroflo60.html

"Today, over thirty years later, General Hydroponics is a leading innovator in the field of hydroponics with factories in North America and Europe. Our products are used by NASA in preparation for hydroponics on the International Space Station. Numerous laboratories and universities throughout the world use our products for teaching and research; other clients use our products for commercial crop production as well as high-tech gardening."
  http://www.genhydro.com/genhydro_US/aeroflo.html