Greg, Liz, and Tom continue their discussion with agricultural historian and writer, James McWilliams. McWilliams talks about the saga of Bill & Lou, two oxen at Green Mountain College, an education institution in Vermont which emphasizes environmental sustainability. In the name of "environmental sustainability," the college was going to euthanize one of the oxen and serve it as hamburger meat to the school's students when the ox became injured and could no longer work. The school had denied numerous requests by animal sanctuaries to allow the injured ox to live out its days in peace. McWilliams talks about this case and others which expose the ethical conflicts of agricultural sustainability and animal abuse. http://james-mcwilliams.com. Aired Dec. 23, 2012.