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Twenty stories about energy depletion, endangered species, pollution, our vanishing wilderness, overpopulation, and alternative energy sources--problems of the immediate future. Science fiction still tells of wondrous futures far away and a long time from now ... but these are stories of the boundaries that lie immediately before us. We're coming to the edge of something---is it to be the death of our world, or an endless future? Before we think about next week, we need to know that there'll be a tomorrow.