Bisesa was old enough to remember anguished turn-of-the-century debates about this kind of geo-engineering, long before anybody had heard of the sunstorm. Was it moral to apply such massive engineering initiatives to the environment? On a planet of intricately interconnected systems of life and air, water and rock, could we even predict the consequences of what we were doing?
Now the situation had changed. In the wake of the sunstorm, if there was to be a hope of keeping the planets still-massive human population alive, there was really little choice but to try to rebuild the living Earthand now, happily, there was a great deal more wisdom available about how to do it.
Decades of intensive research had paid off in a deep understanding of the working of ecologies. Even a small, limited, and contained ecosystem turned out to be extraordinarily complex, with webs of energy flows and interdependencenetworks of who ate whomcomplicated enough to baffle the most mathematical mind. Not only that, ecologies were intrinsically chaotic systems. They were prone to crash and bloom of their own accord, even without any outside interference. Fortunately, however, human ingenuity, supplemented by electronic support, had accelerated to the point where it could riddle out even the complexities of nature. You could manage chaos: it just took a lot of processing.
Overall control of the great global eco-rebuilding project had been put in the metaphorical hands of Thales, the only one of the three great artificial minds to have survived the sunstorm. Bisesa was confident that the ecology Thales was building would prove to be durable and long lastingeven if it wasnt entirely natural, and could never be. It was going to take decades, of course, and even then Earths biosphere would recover only a fraction of the diversity it had once enjoyed. But Bisesa hoped she would live to see the opening up of the Arks, and the release of elephants and lions and chimpanzees back into something like the natural conditions they had once enjoyed.
But of all the great recovery projects, the most ambitious and controversial of all was the taming of the weather.
The first stabs at weather control, notably the U.S. militarys attempts to cause destabilizing rainstorms over North Vietnam and Laos in the 1970s, had been based on ignorance, and were so crude you couldnt even tell if they had worked. What was needed was more subtlety.
The atmosphere and oceans that drove the weather added up to a complex machine powered by colossal amounts of energy from the sun, a machine depending on a multitude of factors including temperature, wind speed, and pressure. And it was chaoticbut that chaotic nature gave it an exquisite sensitivity. Change any one of the controlling parameters, even by a small amount, and you might achieve large effects: the old saw about the butterflys wing flap in Brazil setting off a tornado in Texas had some truth.
How to flap that wing to order was a different problem, however. So mirrors were to be launched into Earths orbit, much smaller siblings of the shield, to deflect sunlight and adjust temperature. Arrays of turbines whipped up artificial winds. Aircraft vapor trails could be used to block sunlight from selected parts of the Earths surface. And so on.
Of course there was plenty of skepticism. Even today, as Eugene described his work, Mikhail said, a bit too loudly, One man steals a rain cloud; another mans crops fail through drought! How can you be sure that your tinkering will have no adverse effects?
We calculate it all. Eugene seemed bemused that Mikhail would even raise such points. He tapped his forehead. Everything is up here.
Mikhail wasnt happy. But this had nothing to do with the ethics of weather control, Bisesa saw: Mikhail was jealous, jealous of the contact her daughter had made with Eugene.
Bud put his arm around Mikhails shoulders. Dont let these youngsters get to you, he said. For better or worse they arent as we were. I guess the shield taught them that they can think big and get away with it. Anyhow its their world! Come on, lets go find a beer.
The little group fragmented.
Siobhan approached Bisesa. So Myra has grown up.
Oh, yes.
I almost feel sorry for the boyalthough I dont think this new breed is in any need of sympathy from the likes of us. She glanced at Eugene and Myra, tall, handsome, confident. Buds right. We got them through the sunstorm. But everything is different now.
But theyre hard, Siobhan, Bisesa said. Or at least Myra is. To her the past, the time cut off by the storm, was nothing but one betrayal after another. A father she never knew. A mother who left her at home, and came back crazy. And then the world itself imploded around her. Well, shes turned her back on it all. Shes not interested in the past, not anymore, because it failed her. But the future is there for her to shape. You see confidence in her. I see a diamond hardness.
But thats how it has to be, Siobhan said gently. This is a new future, new challenges, new responsibilities. They, the young ones, will have to take those responsibilities. While we stand aside.
And worry about them, Bisesa said ruefully.
Oh, yes. We will always do that.
I couldnt bear to lose her, Bisesa blurted.
Siobhan touched her arm. You wont. No matter how far she travels. I know you both well enough for that. Some things are more important even than the future, Bisesa.
Thales spoke smoothly in Bisesas ear. I think the ceremony is about to begin.
Siobhan sighed. Well, we know that, she snapped. Do you ever miss Aristotle? Thales has this annoying habit of stating the bleeding obvious.
But were glad to have him even so, Bisesa said.
Siobhan linked Bisesas arm. Come on. Lets go see the show.
50: Elevator
Bisesa and Siobhan walked through the marquee to an area at the center of the rig. The children swarmed forward, at last distracted by something more interesting than each other.
The center of attention was an object like a squat pyramid, perhaps twenty meters tall. Its surface had been coated with marble slabs that gleamed in the sun. This unassuming structure was to be the anchor point for the Space Elevator, a line of nano-engineered carbon that would lead all the way up from the Earth to geosynchronous orbit thirty thousand kilometers high.
Look at that lot. Siobhan pointed upward. The clear blue sky was filling up with airplanes and helicopters. I wouldnt want to be flying around when thousands of kilometers of bucky-tube cable come uncoiling down into the atmosphere
The Prime Minister of Australia clambered, a bit heavy-footed, up a staircase to a podium right at the apex of the flat-topped pyramid. She held up a sample of the cable that was even now being cautiously dropped into Earths atmosphere. It was actually a broad ribbon, about a meter wide but only a micron thick. And she began to speak.
A lot of people have expressed surprise that Australia was chosen by the Skylift Consortium as the site for the anchor of the worlds first Space Elevator. For one thing its a common myth that you have to anchor an elevator on the equator. Well, the closer the better, but you dont have to be right on it; thirty-two degrees south is close enough. And in many other ways this is an ideal spot. Out here in the ocean were very unlikely to suffer lightning strikes or other unwelcome climatic phenomena. Australia is one of the most stable places on Earth, both geologically and politically. And were just a short hop away from the beautiful city of Perth, which is anticipating its role as a key hub in a new Earthspace transportation network
And so on. It was always this way with space projects, Bud had once told Bisesa, a mix of bullshit and wonder. On the ground it was always turf wars and pork-barrel politicsbut today a cable from space really was to be dropped above the heads of this preening throng: today, in the sunshine, an engineering feat that would have seemed a dream when Bisesa was a child would be completed.