California walnut grower turning shells into power for the farm. Reporter Jason Shoultz visits a Minnesota plant that generates electricity from poultry litter. Reporter Hena Cuevas takes us to a North Carolina company using soybeans to make furniture foam. Meet two California dairymen who have a new approach to selling cheese.

  • Season: 4
  • Episode: 2
  • Duration: 26m 46s
  • Aired: 09/21/2015

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