Humans have begun to transform the Earth. We have built cities, transport networks and power stations, and sprinkled the skies with satellites. If we extrapolate this ability to engineer our own environment - for living space, travel, energy and communications - where does it lead us? Could we transform space too? Predicting the far future is a fool's game. So let's take the usual dodge and say: unless something is forbidden by known physics, it will be done. Eventually.
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