 It'll be followed on Friday by the Producer Price Index, or PPI, which takes a look at those same prices at the wholesale level before they reach consumers. Usually the indices move in tandem. You know, if one goes up, so does the other, but that isn't always the case. To provide food year-round locally into Indian tribes and neighboring states and isolated and poor areas, there are plans for a sprawling greenhouse on North Dakota's Mandan, Hidatsa, and Arikara Reservation. Chuck Sievertson, ABC News.