Though coffee is one of the world’s most important commodities, little of the profit trickles down to the farmers, while workers are abandoning the countryside in search of more lucrative jobs in the cityMary Luz Pérez Arrubla and her brother, Rodrigo, are fourth-generation farmers cultivating coffee on steep Andean slopes near the town of Líbano, in the rich agricultural region of Tolima. Along with the rest of Colombia, the family has enjoyed a historic harvest amid surging global coffee price...