World Hunger--On five continents, a relative handful of rich people worry a great deal about eating too much, and hardly at all about the international majority that lacks means enough to eat enough.
Immigration--Western Europeans and prospering Asians discover anew what Americans have known for a long time: The easier poor neighbors find it to travel, the more of them will come hoping to stay and share the wealth.
Environment--The more we learn about the modern world, the more we realize it is dying: acid rain, smog, toxic waste, filthy cities and dirty seas, vanishing rainforests, desertification, holes in the ozone and the fear of nuclear power supplanting fear of nuclear war. Ask again in '91: That's progress?
Antarctic--Does the world finally decide to preserve the last ecological paradise? Or will mineral- and oil-rich Antarctica, too, fall prey to greedy, befouling exploiters?