The Markets 12/23/17: Wall Street closes slightly down

A calf on the Diedrich dairy farm in Twin Lakes, Wisconsin. (Kristin Decker/ WGN Radio)

Orion opens the show by covering a slightly down closing day of the markets just before the holiday shortened week. Later, Orion discusses renewable fuel with Robert White. Finally, Orion closes the show with his usual closer look at agribusiness.