After the war, industrial development quickened. New technology increased farm productivity through automation of feedlots for hogs and cattle, machine milking at dairy farms, and raising chickens in large buildings. Planting became more specialized with hybridization of corn and wheat, and farm machinery such as tractors and combines became the norm. University of Minnesota professor Norman Borlaug contributed to these developments as part of the Green Revolution. Suburban development accelerated due to increased postwar housing demand and convenient transportation. Increased mobility in turn enabled more specialized jobs.