The Nobel Prize for Literature has never been awarded to a photographer, but over the past forty years the Brazilian-born Sebastião Salgado has traveled the globe to tell some of the world’s most pressing stories. From drought in the Sudan to genocide in Rwanda, forced migrations across borders, refugee camps in Africa, the burning oil fields in Kuwait to the glorious pristine corners and species of our planet, Salgado has given us iconic images of the past half-century.