Global warming, the ozone hole, overpopulation, starvation and malnutrition, war, unemployment, the destruction of species and the rain
forests, pollution of water and air, pesticide and herbicide poisoning, errors in genetic engineering, erosion of topsoil, overfishing, anarchy and
crime, the possibility of a nuclear mishap, chemical warfare or all - out nuclear war: together, or in some cases singly, these dangers threaten to «catch us unexpectedly, like a trap.»