Citrus is an endangered species ? Florida has already lost half its orange groves to a lethal citrus greening disease. In Part 2 of this episode, we'll meet a Frenchman who's devoted his life to saving the Florida grapefruit industry. You'll also see hundreds of acres of trees growing under cover in screened-in closure (like a giant back porch the size of several football fields). Florida growers have a choice: Stand and fight, quit, or adapt. We'll introduce you to people who've taken every path.