Aurora - Страница 2

“I shouldn’t have said that about the name,” Freya says.

“Your mom has been known to have some edges,” her father says, with an expressive lift of the eyebrows.

He himself has no edges, as Freya knows very well. A short round balding man, with doggie eyes and a sweet low voice, mellow and interested. Badim is always there, always benign. One of the ship’s best doctors. Freya loves her father, clings to him as to a rock in high seas. Clings to him now.

He tousles her wild hair, so like Devi’s, and says to her, as he has before, “She has a lot of responsibilities, and it’s hard for her to think about other things, to relax.”

“We’re doing okay though, right, Badim? We’re almost there.”

“Yes, we’re almost there.”

“And we’re doing okay.”

“Yes, of course. We will make it.”

“So why is Devi so worried?”

Badim looks her in the eye with a little smile. “Well,” he says, “there are two parts to that, as I see it. First, there are things to worry about. And second, she is a worrier. It helps her to bring things up and talk through them, talk them out. She can’t hold things inside very well.”

Freya isn’t so sure about this, because not many people seem to notice how mad Devi is. She’s good at holding that inside, anyway.

Freya says as much, and Badim nods.

“Good, that’s right. She is good at holding in things, or ignoring things, up to a certain point, and then she needs to let it out, one way or another. We’re all like that. So, we’re her family, she trusts us, she loves us, so she lets us see how she really feels. So, we just have to let her do that, talk things out, say what she really feels, be how she really is. Then she can go forward. Which is good, because we need her. Not just you and me, though of course we need her too. But everybody needs her.”

“Everybody?”

“Yes. We need her because the ship needs her.” He pauses, sighs. “That’s why she’s so mad.”

Thursday, and so Freya goes into work with Devi rather than spending the day in the crèche with the little kids. She helps Devi on Thursdays. Freya feeds the ducks and turns the compost, and replaces batteries and lightbulbs sometimes, if they’re scheduled for replacement. Devi does all kinds of things, indeed Devi does everything. Often this means talking to people who work in the biomes or on the machines in the spine, then looking at screens with them, then talking some more. When she’s done she grabs Freya by the hand and pulls her along to the next meeting.

“What’s wrong, Devi?”

Big sigh. “I told you already. We started to slow down a few years ago, and it’s changing things inside the ship. Our gravity comes from the ship rotating around the spine, and that creates a Coriolis effect, a little spiral push from the side. But now we’re slowing down, and that’s another force, about the same as the Coriolis effect in some ways, and cutting across it so it’s reduced. You wouldn’t think that would matter so much, but we’re seeing aspects of it they didn’t foresee. There was so much they didn’t think about, that they left for us to find out.”

“That’s good, right?”

Short laugh. Devi always makes the same sounds: Freya can call them up if she wants to, sometimes. “Maybe so. It’s good unless it’s bad. We don’t know how to do this part, we have to learn as we go. Maybe it’s always that way. But we’re in this ship and it’s all we’ve got, so it has to work. But it’s twelve magnitudes smaller than Earth, and that makes for some differences they never thought through. Tell me again about magnitudes?”

“Ten times bigger. Or smaller!” She remembers in time to keep Devi from saying it.

“That’s right. So even one magnitude is a lot, right? And twelve, that’s twelve zeros tacked on. A trillion. That’s not a number we can imagine very well, it’s too big. So, here we are in this thing.”

“And it has to work.”

“Yes. I’m sorry. I shouldn’t burden you with this stuff. I don’t want you to be scared.”

“I’m not scared.”

“Good. But you should be. So there’s my problem.”

“But tell me why.”

“I don’t want to.”

“Just a little bit.”

“Oh, I’ve told you before. It’s always the same. Everything in here has to cycle in a balance. It’s like the teeter-totters at the playground. There has to be an equilibrium in the back-and-forth between the plants and the carbon dioxide in the air. You don’t have to keep it perfectly level, but when one side hits the ground you have to have some legs to push it back up again. And there are so many teeter-totters, all going at different speeds up and down. So you can’t have any accidental moments when they all go down at once. So you have to look to see if that is about to start happening, and if so, you have to shift things around so that it doesn’t. And our ability to figure out how to do that depends on our models, and really, it’s too complex to model.” This thought makes her grimace. “So we try to do everything by little bits and watch what happens. Because we don’t really understand.”

On this day it’s the algae. They grow a lot of algae in big glass trays. Freya has looked at it through a microscope. Lots of little green blobs. Devi says some of it is mixed in with their food. They grow meat like the algae, in big flat tanks, and get almost as much of their food out of these tanks as they do out of the fields in the farming biomes. Which is lucky, because the fields can suffer animal disease, or crop failure. But the tanks can go wrong too. And they need their feedstocks to have something to turn into food. But the tanks are good. They have a lot of tanks going, in both rings, all kept isolated from the others. So they’re all right.

The algae tanks are green or brown or some mix of the two. The colors of things depend on which biome you’re in, because the lights from the sunlines are different in different biomes. Freya likes to see the colors shift as they move from biome to biome, greenhouse to greenhouse, lab to lab. Wheat is blond in the Steppe, yellow in the Prairie. Algae in the labs is many different brownish greens.

It’s warm in the algae labs and smells like bread. Five steps to make bread. Someone says they’re eating more these days, but growing less. This means an hour at least to talk it over, and Freya sits down to paint with the paints in the corner of the lab, left there for her and any other kids who might visit.

Then off again. “Where to now?”

“Off to the salt mines,” Devi declares, knowing Freya will be pleased; they’ll stop at the dairy near the waste treatment plant, get ice cream.

“What is it this time?” Freya said. “More salt in the salty caramel?”

“Yes, more salt in the salty caramel.”

This is a stop where Devi can get visibly irate. The salt sump, the poison factory, the appendix, the toilet, the dead end, the graveyard, the black pit. Devi has worse names for it she says under her breath, thinking again that no one can hear her. Even the fucking shithole!

The people there don’t like her either. There is too much salt in the ship. Nothing wants salt except people, and people want more than they should have, but they’re the only ones who can take it without getting sick. So they all have to eat as much salt as they can without overdoing it, but that doesn’t really help, because it’s a really short loop and they excrete it back into the larger system. Devi always wants long loops. Everything needs to loop in long loops, and never stop looping. Never pile up along the way in an appendix, in a poisonous sick disgusting stupid cesspool, in a slough of despond, in a fucking shithole. Devi sometimes fears she herself will sink into a slough of despond. Freya promises to pull her out if she does.

So they don’t like chlorine, or creatinine, or hippuric acid. The bugs can eat some of these things and turn them into something else. But the bugs are dying now, and no one knows why. And Devi thinks the ship is short on bromine, which she can’t understand.

And they can’t fix nitrogen. Why does nitrogen break so often? Because it’s hard to fix! Ha-ha. Phosphorus and sulfur are just as bad. They really need their bugs for these. So the bugs have to stay healthy too. Even though they’re not enough. For anyone to be healthy, everyone has to be healthy. Even bugs. No one is happy unless everyone is safe. But nothing is safe. This strikes Freya as a problem. Anabaena variabilis is our friend!

You need machines and you need bugs. Burn things to ash and feed the ash to the bugs. They’re too small to see until there are zillions of them together. Then they look like mold on bread. Which makes sense because mold is one kind of bug. Not one of the good ones; well, bad but good. Bad to eat anyway. Devi doesn’t want her eating moldy bread, yuck! Who would do that?

You can get two hundred liters of oxygen a week from one liter of suspended algae, if it is lit properly. Just two liters of algae will make enough oxygen for a person. But they have 2,122 people on board. So they have other ways to make oxygen too. There’s even some of it stored in tanks in the walls of the ship. It’s freezing cold but stays as liquid as water.

The algae bottles are shaped like their biomes. So they’re like algae in a bottle! This makes Devi laugh her short laugh. All they need is a better recyclostat. The algae always have bugs living with them, eating them as they grow. With people it’s the same, but different. Growing just a gram of Chlorella takes in a liter of carbon dioxide and gives out 1.2 liters of oxygen. Good for the Chlorella, but the photosynthesis of algae and the respiration of humans are not in balance. They have to feed the algae just right to get it between eight and ten, where people are. Back and forth the gases go, into people, out of people, into plants, out of plants. Eat the plants, poop the plants, fertilize the soil, grow the plants, eat the plants. All of them breathing back and forth into each other’s mouths. Loops looping. Teeter-totters teetering and tottering all in a big row, but they can’t all bottom out on the same side at the same time. Even though they’re invisible!