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By Root 1848 0

colonists’ disagreements about it were played out on the largest possible public stage. Some of them reacted by avoiding the cameras and requests for interviews; “It’s just what I came to get away from,” Hiroko’s assistant Iwao said, and quite a few agreed with him. Most of the rest didn’t care one way or the other; a few seemed actually to like it. Phyllis’s weekly program, for instance, was carried by both Christian cable stations and business-analysis programs all over the world. But no matter how they dealt with it, it was becoming clear that most people on Earth and on Mars assumed that terraforming would take place. It was not a question of whether but of when, and how much. Among the colonists themselves this was nearly the universal view. Very few sided with Ann: Simon of course; perhaps Ursula and Sasha; perhaps Hiroko; in his way John, and now in her way Nadia. There were more of these “reds” back on Earth, but they necessarily held the position as a theory, an aesthetic judgment. The strongest point to their arguments, and thus the one that Ann emphasized most often in her communiqués back to Earth, was the possibility of indigenous life. “If there is Martian life here,” Ann would say, “the radical alteration of the climate might kill it off. We cannot intrude on the situation while the status of life on Mars is unknown; it’s unscientific, and worse, it’s immoral.”

Many agreed with that, including a lot of the Terran scientific community, which influenced the UNOMA committee charged with overseeing the colony. But every time Sax heard the argument he blinked rapidly. “There’s no sign of life on the surface,” he would say mildly. “If it does exist it has to be underground, near volcanic vents I suppose. But even if there is life down there, we could search for ten thousand years and never find it, nor eliminate the possibility it isn’t down there somewhere else, somewhere we haven’t looked. So waiting until we know for sure that there is no life—” which was a fairly common position among moderates—”effectively means waiting forever. For a remote possibility which terraforming wouldn’t immediately endanger anyway.”

“Of course it would,” Ann would retort. “Maybe not immediately, but eventually the permafrost would melt, there would be movement through the hydrosphere, and contamination of all of it by warmer water and Terran lifeforms, bacteria, viruses, algae. It might take a while, but it would surely happen. And we can’t risk that.”

Sax would shrug. “First, it’s postulated life, very low probability. Second, it wouldn’t be endangered for centuries. We could presumably locate it and protect it in that time.”

“But we may not be able to find it.”

“So we stop for low-probability life we can never actually find?”

Ann shrugged. “We have to, unless you want to argue that it’s okay to destroy life on other planets, as long as we can’t find it. And don’t forget, indigenous life on Mars would be the biggest story of all time. It would have implications for the galactic frequency of life that are impossible to exaggerate. Looking for life is one of the main reasons we’re here!”

“Well,” Sax would say, “in the meantime, life that we are quite sure exists is being exposed to an extraordinarily high amount of radiation. If we don’t do something to lessen it, we may not be able to stay here. We need a thicker atmosphere to cut down on radiation.”

This was not a reply to Ann’s point but the substitution of another one, and it was an argument that was very influential. Millions on Earth wanted to come to Mars, to the “new frontier,” where life was an adventure again; waiting lists for emigration both real and fake were massively oversubscribed. But no one wanted to live in a bath of mutagenic radiation, and the practical desire to make the planet safe for humans was stronger in most people than the desire to preserve the lifeless landscape already there, or to protect a postulated indigenous life that many scientists assured them did not exist.

So it did seem, even among those urging caution, that terraforming was going