"Widely spaced earth-sheltered towns offer sweeping views over the plains. High-speed trains link the communities. Food is grown in the region. Bikeways are everywhere. Nonpolluting hydrogen powers all vehicles. Sunlight and wind generate the hydrogen. Note the earth-covered bridges, the continuous window bands, the wind machines across the farmlands. In this new America, everything is reused, recycled, conserved."

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Whenever calamity howlers shake their heads and impress upon you that this, that, and the next dire catastrophe is to befall this nation or the nations of the world-such as, for example, that exhaustion of the world's oil supply will bring all transportation and machinery to a standstill through lack of lubrication, or that exhaustion of the earth's stores of coal will make life unlivable in these cold climates-just smile and reply that the worst troubles of all are those that never happen [and] that you prefer not to cross shaky bridges until you come to them.

— B. C. Forbes