All of this — Madeleine learned, tapping into the web of information which wrapped around the new planet — was fueled by huge core-tapping bores called Paulis mines. Frank Paulis himself was still alive. Madeleine felt a spark of pride that one of her own antique generation had achieved such greatness. But, fifty years after his huge technical triumph, Paulis was disgraced, incommunicado.
Virtual Nemoto materialized once more.
Madeleine had found out that Nemoto was still alive, as best anybody knew. But she had dropped out of sight for a long period. It was rumored she had lived as a recluse on Farside, still relatively uninhabited. It had been a breakdown, it seemed, that had lasted for decades. Nemoto would say nothing of any of this, nothing of herself, even of the history Madeleine and Ben had skipped over. Rather, she wanted to talk only of the future, her projects, just as she always had.
“Good news.” She smiled, her face skull-like. “I have a ship.”
“What ship?” Ben asked.
“Gurrutu. One of my colony ships. It’s completed the Earth-Neptune round trip twice already. It’s in high Earth orbit.” She looked wistful. “It’s actually safer there than orbiting the Moon. Here, it would be claimed and scavenged for its metals.” She studied them. “You must go to Triton.”
Ben nodded. “Of course.”
Nemoto eyed her. “And you, Meacher.”
Of course Ben must, Madeleine thought. Those are his people, out there in the cold, struggling to survive. It’s his wife, still conveniently alive, having traversed those hundred years the long way. But — regardless of Nemoto’s ambitions — it’s nothing to do with me.
But, as she gazed at Nemoto’s frail virtual figure, doggedly surviving, doggedly battling, she felt torn. Maybe you aren’t as disengaged from all this as you used to be, Madeleine.
“Even if we make it to Triton,” she said, “what are we supposed to do when we get there? What are you planning, Nemoto?”
“We must stop the Gaijin — and whoever follows them,” Nemoto said bleakly. “What else is there to do?”
They would have to spend a month in Earth orbit, working on Gurrutu.
The colony craft was decades old, and showing its age. Gurrutu had been improvised from the liquid-propellant core booster of an Ariane 12 rocket. It was a simple cylinder, with the fuel tanks inside refurbished and made habitable. The main living area of Gurrutu was a big hydrogen tank, with a smaller oxygen tank used for storage. A fireman’s pole ran the length of the hydrogen tank, up through a series of mesh floor partitions to an instrument cluster.
Big, fragile-looking, solar-cell wings had been fixed to the exterior. But reconditioned fission reactors provided power in the dimly lit outer reaches of the Solar System. These were old technology: heavy Soviet-era antiques of a design called Topaz. Each Topaz was a clutter of pipes and tubing and control rods set atop a big radiator cone of corrugated aluminum.
There was a docking mount and an instrument module at one end of the core booster, and a cluster of ion rockets at the other. The ion thrusters were suitable for missions of long duration: missions measured in years, to the outer planets and beyond. And they worked; they had ferried the Yolgnu to Triton. But the ion thrusters needed much refurbishment. And they, too, were old technology. The newest Lunar Japanese helium-3 fusion drives were, Madeleine learned, much more effective.
It wouldn’t be a comfortable ride out to Neptune. The toilets never seemed to vent properly. There was a chorus of bangs, wheezes, and rattles when they tried to sleep. The solar panels had steadily degraded so that there was never enough power, even this close to the Sun. Madeleine soon tired of half-heated meals, lukewarm coffee, and tepid bathing water.
But forty people had lived in this windowless cavern slum for the five years it had taken Gurrutu to reach Neptune: eating hydroponically grown plants, recycling their waste, trying not to drive each other crazy. The tank had been slung with hammocks and blankets, little nests of humans seeking privacy. Three children had been born here.
Madeleine found scratches on an aluminum bulkhead that recorded a child’s growth, the image of a favorite uncle tucked into the back of a storage cupboard.
The ship could have been built in the twenty-first century — even the twentieth. Human research into spaceflight engineering had all but stopped when the Gaijin had arrived. Madeleine thought of the Gaijin flower-ships that had carried her to the Saddle Point radius and beyond: jewelled, perfect, faultless.
But Gurrutu was simply the best Nemoto could do. And soit was heroic. With such equipment, Nemoto had reachedNeptune — thirty times Earth’s distance from the Sun, ten times farther out than the asteroid belt. Only Malenfant himself, unaided by Gaijin, had gone farther — and his mission had been a one-man stunt. Nemoto had sent two hundred colonists.
As she labored over the lashed-up systems, improvising repairs, Madeleine’s respect for Nemoto deepened.
And, while Madeleine worked, the Earth slid liquidly past the windows of the Gurrutu.
Those old environmentalist Cassandras had been proven right, Madeleine learned. The climate really had been only metastable; in the end, after forty thousand years of digging and building and burning, humans managed to destabilize the world, tip over the whole damn bowl of cherries, until it settled with stunning rapidity into this new, lethal state.
Madeleine could see patterns in the ice — ripples, lines of debris, varying colors — where the ice had flowed from its fastnesses at the poles and the mountain peaks. There was little cloud over the great ice sheets — merely wisps of cirrus, streaked by winds that seemed to tear perpetually around immense low-pressure systems squatting over the frozen poles.
The ice covered most of Canada, and a great tongue of it extended far into the American Midwest, reaching farther south than the Great Lakes — or where the lakes used to be. Chicago, Detroit, Toronto, and the other cities were all gone now, drowned. The familiar lobed shapes of the Great Lakes themselves had been overwhelmed by a new, glimmering ocean that stretched a thousand kilometers inland from the eastern seaboard. And to the west, a ribbon of water stretched up from Puget Sound toward Alaska. The land itself was crushed down under the weight of the ice, and seawater had flowed eagerly into the shallow depressions so formed.
Even to the south of the ice line, the land was grievously damaged. Desert stretched from Oregon through Idaho, Wyoming, Nebraska, and Iowa — a belt of immense, rippled sand dunes. It was a place of violent winds, for heavy, cold air poured off the ice over the exposed land, and she saw giant dust storms that persisted for days. At night she saw lights glimmer in the vast expanse, flickering: just campfires lit by descendants of midwestern Americans who must be reduced to living like Bedouins in that great cold desert.
South of the ice, Earth at first glance looked as temperate and habitable as it had always done. She could see green in the tropical areas, coral reefs, ships plying to and fro through warm, ice-free seas. But nowhere was unaffected. The great rain forests of equatorial Africa and the Amazon Basin had shrunk back into isolated pockets, surrounded by swathes of what looked like grasslands. Conversely, the Sahara seemed to be turning green. Even the shapes of the continents had changed as glistening sheets of continental shelves were exposed by the falling sea level.
In the southern United States there were still cities: great misty-gray urban sprawls around the coasts and along the river valleys, from Baja California, along the Mexican border, the Gulf of Mexico, to Florida. But New Orleans seemed to be burning continually, great fires blocks wide sending up black smoke plumes that streaked out over hundreds of kilometers. Likewise, there appeared to be a small war raging around Orlando; she made out what looked like tank tracks, frequent explosions that lit up the night.