Milton Orr looked across the rolling hills in northeast Tennessee. “I remember when we had over 1,000 dairy farms in this county. Now we have less than 40,” Orr, an agriculture adviser for Greene County, Tenn., told me with a tinge of sadness. That was six years ago. Today, only 14 dairy farms remain in Greene County, and there are only 125 dairy farms in all of Tennessee. Across the country, the dairy industry is seeing ...