But, as the Cold War meets the sexual revolution, and the threat of
nuclear holocaust escalates, the lifelong friendship of the two girls is shattered — by the clash of desire and the determination to survive.
At least seven immense, interdependent threats to the quality of life on spaceship earth continue to
escalate: the population explosion; the widening gulf between rich and poor nations; massive malnutrition (caused mainly by economic injustice, which produces maldistribution of available food); environmental pollution and degradation; the depletion of the irreplaceable resources of our finite planet; the growing threat of
nuclear terrorism and eventual
holocaust (with the equivalent of one and a half million Hiroshima - sized bombs in the arsenals of the world); and the worldwide tendency for the fruits of science and technology to be used without ethical responsibility.