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An asteroid or a supervolcano could certainly destroy us, but we also face risks the dinosaurs never saw: An engineered virus, nuclear war, inadvertent creation of a micro black hole, or some as-yet-unknown technology could spell the end of us.

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The alternative may well be a civilization plunged into the abyss of annihilation, our earthly habitat transformed into a tragic inferno that even Dante could not imagine. So this is our challenge: to see that war is obsolete, cast into limbo.

If modern man continues to flirt unhesitatingly with war, he will transform his earthly habitat into an inferno such as even the mind of Dante could not imagine.

There may have been a time when war served as a negative good by preventing the spread and growth of an evil force, but the destructive power of modern weapons eliminated even the possibility that war may serve as a negative good.

The redeeming feature of war is that it puts a nation to the test. As exposure to the atmosphere reduces all mummies to instant dissolution, so war passes supreme judgment upon social systems that have outlived their vitality.

The fact that most of the time human beings put the truth about the nature and risks of the nuclear war out of their minds because it is too painful and therefore not "acceptable", does not alter the nature and risks of such war.

If men can develop weapons that are so terrifying as to make the thought of global war include almost a sentence for suicide, you would think that man's intelligence and his comprehension... would include also his ability to find a peaceful solution.