How We Got Here: The Century That Learned to Manufacture Rain

It is worth remembering that within living memory, drinking the sea was a shipwreck's last resort, not a city's water supply. The desalinated liter now landing on a Karachi bill is the endpoint of a hundred-year migration of the ordinary: rain, once free and assumed, has become a thing we increasingly manufacture. The historian's discipline is to notice when a miracle becomes a utility, because that is precisely when we stop pricing it honestly. Fusion made cheap baseload power, and cheap power made cheap water, and cheap water let corridors swell past 120 million people without the catastrophe the numbers alone would predict. But a manufactured good has a cost curve, and this autumn the curve turned upward. The lesson the century keeps re-teaching is that abundance built on energy is abundance on loan. We did not run out of water. We began, at last, to be billed for the illusion that we ever had it free.