The following photos are provided courtesy of the USDA Natural Resources Conservation Service:

• NRCSCA0006—Lynn Betts, 2000, Strawberries in California.
• NRCSCA06176—Manure injection implement being used on a farm field in California.
• NRCSIA01030—Lynn Betts, 2000, Wind generators in northwest Iowa.
• NRCSAZ02091—Jeff Vanuga, 2002, Confined feeding operations of cattle. Yuma, AZ.
• NRCSIA99106—Tim McCabe, 1999, Corn harvest in Montgomery County, Iowa.
  

Cornell University: Mark Kogut, Applied Economics and Management; Elizabeth Bihn, M.S., Department of Food Science.