Terraforming: the scientific word for what was always the dream of every Fremen living on Arrakis, the desert planet. A time when water was plentiful, stillsuits discarded, and life easier.
But it is always easy to dream about the impossible without consequences. When it becomes possible, you forget to plan ahead, to worry about unwanted side effects. And now here they were.
Lying on the ground, in visible pain, Roadrunner7671 rested. He stared at the ceiling of the meeting hall, wondering where the many scratches there had come from. In a small hollow naturally formed in the far wall, faust, another Fremen warrior -- for all Fremen are warriors -- leaned on one leg, staring coldly. And close to the slightly raised dais where leaders spoke and duels were won, iguanaiguana stood with his back to the group.
The worms, gone. The spice, dwindling. The pain, growing. Why had no one thought about this? No desert means no worms. Why would we ever want that?