Thank goodness for the twice-yearly “Authors on Stage” program at Wellesley College, which I’ve happily attended for years with my friend, Pam. If not for this wonderful series, which each time features three authors talking about their new books, I may never have found The Food Explorer. As the title suggests, the book tells the remarkable story of David Fairchild, an American botanist, who from the late nineteenth century well into the twentieth, devoted his life to traveling the world in search of new plants and foods that he could bring back to America. He added a vast quantity of foods to Americans’ diets and increased by a huge amount the diversity of what farmers grow.