What the Green Remembers

There were two hundred and twelve tanks in the Lungs, and Wren Achterberg meant to touch every one of them before the morning bell, because no one else would. The sensors didn't need her to. Nobody needed her to. That was the first thing Gran Mo had taught her. The second was to do it anyway.

Tank one. She laid her palm flat against the glass. Warm, the way a sleeping animal is warm. Inside, the culture turned in slow green coils, lit from below, throwing her shadow up the brass bands and onto the vaulted ceiling forty meters overhead. She counted her breath in, four, and out, four, and moved on.

Tank two. Tank three. The paddle hung from her belt on a loop of cord, its handle worn pale and smooth in two places where Gran Mo's thumbs had pressed for fifty years. Wren's thumbs didn't fit the grooves yet. She kept checking whether they would.

"Tend the one in front of you," she said under her breath. It was what tenders said, or what they used to say, when there had been more than one of them. This was her first solo count. Four days since the funeral. Three days since the Council stitched an apprentice's stripe to her sleeve and gave her a berth on the inside: a narrow, warm room with a door that locked, two rings in from where her mother and Pip were sleeping.

At tank thirty, the sensor panel blinked at her, patient and amber: ALL CULTURES NOMINAL. VARIANCE WITHIN TOLERANCE. It said that every morning. It had said that, Gran Mo liked to point out, every morning for forty years, while the oxygen numbers crept down a hair at a time, a hair the system had been taught to call noise.

The speakers came on at tank thirty-eight.

They did not usually come on. The chime was the old one, three falling notes the station played for births and deaths and almost nothing in between, and every tender on the floor would have stopped work, if there had been other tenders on the floor. Wren's hand stopped.

"This is the Council of Vesper Reach." Director Brisk's voice, calm as a spirit level. "As of this morning, station oxygen production is down three-tenths of one percent on the week. This trend is not new, and it is not reversing. To protect every life aboard, the Council has approved the Contraction. Outer Ring Three will be sealed in nine days. Relocation assignments are posted. Please do not come to the inner checkpoints without one."

Nine. She counted it on her fingers before she could stop herself, as if it might come out to a different number. Nine days. Her mother had not been assigned. Pip had not been assigned. Pip was seven and kept a seed in a cup on the windowsill of a ring that had no sun, watering it, telling it things.

The only inside berth in the Achterberg family hung on a hook by the door of the Lungs, stitched to a coat with her name on it. She had known what it meant. She had let herself not know it, the way the sensors let themselves not know things.

Her palm was still on tank thirty-eight. She left it there until the glass stopped feeling warm and started feeling like glass. Then she moved on, because the count was not finished, and because she did not know what else to do with her hands.

Tank forty was dull, edging toward gray. Tank forty-two was the same. Tank forty-one was singing.

That was Gran Mo's word, and Wren had never understood it until now. The green inside was not the tired, even green of the rest of the row. It was bright, almost gold at the edges, crowded with fine moving threads that caught the light like sparks. When she pressed her hand to the glass, the culture leaned toward it.

She checked the panel. TANK 41: SIGNAL IRREGULAR. FLAGGED AS NOISE. EXCLUDED FROM AVERAGE.

She checked the feed line, and there it was: a second valve where there should have been one. Small, hand-cut, the brass still bright where a file had bitten it. Someone had been dosing this tank. Someone had been feeding it something the system didn't know how to see.

Behind the tank, the maintenance crawl had a hatch no one had opened in her lifetime. Its seal was split. The rust on the lip had been scraped to clean metal in two long arcs, the way a boot scrapes going through in a hurry, and on the rim there was a smear of green, still damp.

Protocol was clear. Anomalous growth was contamination until proven otherwise. She would log it, Security would seal the crawl, the tank would be flushed by noon, and no one would ever look at her twice. For her whole life, that had been the safest thing a person could be.

Wren took out the log stylus. She held it above the panel. She counted to four.

Then she put it away, unhooked Gran Mo's paddle from her belt, and climbed into the dark, where the air grew colder with every meter and smelled, faintly, impossibly, of cut grass.

Behind her, two hundred and eleven tanks waited, and no one counted them.

The crawl was a square metal throat just wide enough for her shoulders, and it ran outward. Wren could feel which way without a map. Every meter away from the hub made her a little heavier and the air a little colder, and the green smell came and went ahead of her like someone walking a few steps in front.

She counted. Hands, knees, one, two. Forty-one rungs where the crawl dropped, which she decided not to think about. Three hundred and twelve shuffles to the first junction, where a frost-furred valve wheel said R2 in a stencil someone had painted before her mother was born. Five hundred and six to the second. The hum and bubble of the Lungs fell away behind her, and what came instead was the station's other sound: the long, slow ticking of metal in the cold.

At the third junction the crawl split three ways, and she stopped, and found she had lost the number. She had been counting, and then she had been thinking about Pip's cup on the windowsill, and the number was simply gone, the way a step is gone in the dark. She said a figure out loud to see if it sounded right. It didn't. Her breath hung in front of her face and didn't fall.

On her wrist, under the lamp, were Gran Mo's notes. Forty-three of them, recorded on shift for no one in particular: valve tolerances, the price of good thread, and once, for nine minutes, a song she had half forgotten. Wren had played forty-two. The last was dated the morning of the day Gran Mo didn't come in. Her thumb found the button. It would be something, down here, to hear a voice. It would be something to hear that voice say anything at all. She took her thumb away.

She chose the left branch because the green smell was stronger there, and because Gran Mo used to say a nose was the only sensor on the station nobody had taught to ignore things.

The crawl ended in a grille, and the grille was already open, and on the other side was Ring Four.

She had never seen it. Nobody her age had. It had been sealed when her mother was a girl, and it looked it: a long bay of dead tank cradles running off into the dark, their glass gone milky, their brass gone green the wrong way. Ice had grown up the walls in sheets. The air was thin and wrong in her ears, like the moment before a sneeze.

And in the middle of all that cold, there was light.

Nine tanks. None of them matched. One was a coolant drum with its top cut off, one a water cistern laid on its side, one an aquarium so old it had a fish etched on the glass. They were wrapped in blankets and padded jackets and somebody's quilt, huddled around a heater coil that had certainly been stolen from somewhere warmer, and every one of them was singing. The green in them was the green of tank forty-one: gold at the edges, crowded with bright threads, so alive it threw shadows. After the dead bay it hurt to look at. She looked anyway.

"Don't," said someone behind her.

He had a wrench, and he held it the way people hold things they aren't sure they'll use, high and a little too tight. He was older than she was, though not by much, thin in the way of people from the outer rings, in a scavenger's coat of patched-together pockets. His face had decided some time ago not to show what it was feeling. He was looking at her stripe. "You're a tender," he said. "Tenders report."

"I haven't," Wren said. It came out smaller than she meant.

"Yet."

She didn't answer, because she was looking at his hands. They were cracked across every knuckle and split at the creases of the palms, raw in the way skin gets when it has stopped healing and started being permanent, and there was green in the cracks. She had seen hands like that once before. They had belonged to an old woman, and they had held a paddle.

Somewhere among the tanks a timer went off, a cheap two-note kitchen chime, absurd in the frozen dark.

He swore. He looked at her, and at the tanks, and at her again, and then he did a thing she would think about for a long time afterward. He set the wrench down on a cradle, within her reach, turned his back on her, and went to work.

He stirred them in order with a long, bent spoon wrapped in tape where his grip went. In, and around, and up, and rest. He didn't hurry, though she could see he wanted to. In each tank the culture turned after the spoon and kept turning after the spoon came out, as if it had been waiting for exactly this and knew the steps. Wren found she was counting under her breath. Every stroke came out to four.

His name was Kesh. He gave it to her the way people hand over something they don't expect to get back, and then he tapped a gauge wired to the side of the cistern, a scavenged thing with half its numbers rubbed away. "Three times," he said. "Three times what your Lungs put out, liter for liter. More at the top of the cycle. Less if I'm late." He lifted his hands a little without seeming to know he was doing it. "I'm always late."

"How often?"

"Every three hours. Every tank. By hand, or it goes gray in a day." He laughed, not kindly. "Your sensors would hate it. It never sits still long enough to average."

It had come from the Lungs, he told her: a batch condemned as contaminated two winters back and sent out to Three for dumping, which was the kind of work scavengers got paid for in ration chits. He'd tipped most of it. Some he'd kept, because it was glowing in the barrel and he had never seen anything glow out there. Nine tanks. Months. He slept, he said, in pieces.

"And forty-one?"

"Four's getting colder." He nodded at the ice on the walls as if it had insulted him personally. "The heater can't keep up. If I lose the Grove, I lose all of it, so I put some somewhere warm. Your Lungs were the only warm place I could reach." He shrugged. "I come up at third bell. Nobody's ever there."

Nobody had been there because Gran Mo was dead, and Wren had been asleep on the inside, in a narrow warm room with a door that locked.

"Why didn't you tell anyone?"

He looked at her as if she'd asked why he didn't tell the ice. "Tell who? They're sealing us."

The stylus was in her pocket, and protocol was very clear. She thought of the second valve, cut by hand, and of these hands cutting it. She thought of Pip, watering a seed that would never see a sun, because somebody ought to.

"I won't report it," she said. "And I'll stir forty-one on my count. You don't have to come up." She hadn't known she was going to say it until it was said.

He didn't thank her. He picked the wrench back up, which was almost worse. Then, as she turned toward the crawl, he said, flatly, the way you'd tell someone the time: "Doesn't matter, you know. The Contraction welds Four shut with the rest. Day nine. The Grove dies either way."

The climb back took twice as long. When she came out behind tank forty-one, the morning bell had rung hours ago, and the panel at tank thirty was blinking a new line, amber and patient, with her own name in it: COUNT INCOMPLETE. TENDER: ACHTERBERG, W.

Eight days.

For two days she stirred tank forty-one herself, at the end of each count, when the floor was emptiest. Gran Mo's paddle through the inspection port: in, and around, and up, and rest. Four. The culture leaned into the wood. By the second morning it was the brightest thing in the Lungs, a gold line burning down the middle of a row going gray, and the panel went on calling it noise.

She did the arithmetic on the back of a ration slip, and then again on a clean one, because it couldn't be right. It was. Nine scavenged tanks in a frozen bay, tended by one exhausted boy, were doing the work of twenty-seven. She didn't know what the Council could do with a number like that. She only knew that they had tanks and heat and people, and Kesh had a spoon.

That was the thing about being careful your whole life, about doing everything right so no one ever had cause to look at you: some part of you went on believing that if you ever brought them something true, they would know what to do with it.

With six days left, she put on the coat with her name stitched in it and went to see Director Brisk.

His office was in Ring One, warm the way the Lungs were warm, and every wall of it was oxygen: graphs, years of them, one slow line leaning down across the panels like something tired of standing. He listened without interrupting. Tank forty-one, the second valve, the gold, three to one. She did not say a name. She had practiced not saying it all the way up the spoke.

When she finished, he was quiet a moment. "Thank you for bringing this to me," he said. "I mean that." Then he told her why it didn't matter.

"It needs a person every three hours, forever. To cover this week's drift you'd want a few hundred tanks of it, which is every adult in Ring Three stirring day and night for the rest of their lives, betting the station's air on nobody falling asleep. And it came out of a condemned batch. If it gets into the Lungs proper and it isn't what you think it is, we don't lose six hundred people. We lose everyone." He said it the way people say things they have already said to themselves many times, at night.

"And here is the part that isn't arithmetic." He touched a panel, and the graph rolled back to an older year. "When I was nineteen, we sealed Ring Five. Somebody started a story that a fix was coming. A few more weeks. So people didn't move. They barricaded, and on the last day they all moved at once, and the checkpoint was built for a line, not a crowd." He didn't tell her the number. He told her it was more than the sealing would have cost. "Hope without capacity is how you kill people in a corridor, Apprentice. I'm not choosing who. The numbers chose who. I'm choosing how."

She had nothing to put against that. A ration slip, and a thing an old woman used to say. Tend the one in front of you. There were six hundred in front of him. You couldn't tend six hundred people one at a time; that was what the Council was for. For the first time in her life the rule sounded like Gran Mo in her last months: old, and kind, and too small.

Brisk touched his desk. "Security. Flush tank forty-one in the Lungs and trace its feed line. Wherever it goes, treat it as a biohazard site." He looked at her with something close to sympathy. "You did the right thing."

It was on the walk back, three hundred steps from his door, that she understood where the feed line went.

She didn't count this time. She left the coat on its hook and took the crawl on hands and knees and the rungs two at a time, skinning both palms, and the cold came up to meet her faster than before, as if it had been waiting.

Security was already in Four. She heard them before she saw them: boots, a sled's whine, someone laughing, not cruelly, the way people laugh at work. Lamps swung through the dead bay. Two tanks were already tipped, a green stain spreading across the frost, and Kesh stood between the rest and the lamps with his wrench and no plan at all.

He saw her stripe before he saw her face. She watched him understand.

There was no time for what was in his face. "The Three corridor," she said. "Is it open?" "For now," he said, and they took what they could carry: jars he'd kept for splitting, a carboy with a crack in its shoulder, his arms full and hers full. Then they ran.

The corridor from Four to Three was supposed to be welded on day nine. Someone had moved that up. Halfway along it the lights went from white to red, and a voice older than either of them began to say, without urgency, PRESSURE DIFFERENTIAL. SECTION SEALING. CLEAR THE BULKHEAD.

The air went first. It pulled at her, a long cold tug toward the dark end, and her ears popped and kept popping. Frost bloomed down the walls in a single breath and raced ahead of them along the ribs. Ahead, the bulkhead was coming down in segments, each one landing with a sound she felt in her teeth. Four segments. Three. Two.

Kesh was faster. He reached the gap first, and turned, and instead of going through he took her by the collar and threw her under it.

She heard the jars go, one after another, like ice breaking on a pond. She heard Kesh make a sound she didn't have a word for. When she rolled over he was through, on the floor beside her, one arm bent at an angle arms don't go where the last segment had caught it, and the bulkhead was down behind him, and the window in it was already white.

Through the frosted glass, the last of the Grove lay spilled across the corridor floor, green going black.

Inside her coverall, against her chest, where she had shoved it without thinking, was one jar. Cracked down the side. Still warm. Still, faintly, singing.

Medical set his arm in two places. He let them. He didn't look at her once the whole time, until she said she was sorry, and then he did.

"You didn't say my name," Kesh said. "Did you. You were careful." He turned his face to the wall. "You didn't have to."

In the Lungs, a team in sealed suits drained tank forty-one while she watched. They did it properly: isolation valve, sterilant, flush. The gold went down the drain in a long spiral that kept turning after the pump stopped, as if it still expected a hand. The panel at tank thirty updated itself. ALL CULTURES NOMINAL. VARIANCE WITHIN TOLERANCE.

The man waiting by the door was younger than Brisk and softer-spoken. Ansel Pryce, from the Director's office. He had her coat over his arm, the one with her name in it, lifted down from its hook and folded like a gift.

"The Director doesn't want you hurt," he said. "He wants you inside. Hand over the sample and the berth stays yours. Nothing goes on your record. In a week, none of this will have happened." His eyes went, briefly, to the shape under her coverall. "It's dying anyway, isn't it?"

It was. She could feel it through the cloth: the cold where the crack wept, the faint, slowing turn of a culture with no one to stir it. When she looked down, the green had gone gray at the edges, the way the long row had, the way everything on Vesper Reach did if you let it.

"I'll think about it," she said, which was what people on the inside said.

Five days. One jar. It was already dying.

That night she slept on the inside for what she understood would be the last time, and she did not sleep.

The jar stood on the shelf where the light could reach it. Every hour she got up and stirred it with the handle of a spoon, four, and every hour it was a little grayer. Around third bell she sat on the floor with her back against the locked door and played the last of Gran Mo's notes, because there was nothing left to save it for.

It began with the bench creaking: Gran Mo, settling. Then her voice, close to the recorder, the way she talked when she thought no one was listening.

"Panel looked at all two hundred and twelve again this morning and told me the average. Nominal. It's always nominal. The average never needed anybody; that's the trouble with it." The paddle knocked glass. "People think the job is keeping the Lungs alive. Nobody can keep the Lungs alive. You keep one tank alive, and then you keep the next one. My mother's lot stirred every one of them, on a count, and they sang like you wouldn't believe. Then we let the machines smooth it all flat." A long pause. "Tend the one in front of you, Wren. That's the whole trick. It was never a big trick. It just has to be done by a lot of people, every day, and that's the part nobody wants to hear."

The note ended in the middle of a breath.

Wren sat very still. A batch from the Lungs, Kesh had said, condemned because it wouldn't hold still long enough for the sensors. Maybe it had never been sick. Maybe it had only been remembering.

She thought of Kesh's hands. Nine tanks, one boy, a kitchen timer. The Grove hadn't failed because the Green was weak. It had failed because it was one person, and one person gets tired, and gets found, and gets hurt. Brisk was right that it couldn't be made big. He had never thought to make it small: not one tank the size of the Lungs, but six hundred jars the size of a hand, each one somebody's one in front of them.

In the morning she hung the coat back on its hook by the door of the Lungs and left it there.

She split the culture on Gran Mo's old bench, into nine jars from the nutrient store: a finger of gray-gold Green in each, topped up with feed, lids pierced with a heated pin. Nine. The number had followed her for a week. She was done being afraid of it.

Then she carried them to the medical bay in a crate and set it on Kesh's bed.

"No," he said, before she'd asked anything.

"I don't know the rhythm," Wren said. "Not properly. I've been guessing. If I guess wrong, they all go gray, and then there's nothing." She held out Gran Mo's paddle. "Show me."

He lifted the splinted arm an inch, as far as it would go, and let it fall. For a long moment he looked at the jars, nine small lights in a crate, the exact color of everything he'd lost. "I can't even hold it," he said, and it sounded like the worst thing he had ever admitted.

"Then you'll have to teach me."

He was quiet so long she thought that was the answer. Then he sat up, took her wrist in his good hand, cracked palm against her skin, and moved it. In, and around. Up, and rest. "Breathe with it," he said. "In on the down-stroke." In, four. Out, four. It was the count she had been keeping her whole life, under her breath, to keep from being afraid. Her thumbs slid on the worn handle and found the two pale grooves where Gran Mo's had been, and fit.

Ring Three was colder than she remembered, or she had been inside long enough to forget. She started at her own door.

Pip took the first jar in both hands as if it might wake. He set it on the windowsill beside the cup with the seed in it, watched her show him the stroke, and did it back, lips moving. "Does it know it's me?" he asked. Nobody had ever asked her anything she wanted more to answer. "Yes," she said, and didn't know if it was true, and didn't care. Her mother took the second jar and asked no questions and was stirring before Wren had finished showing her how.

"Here," Wren said at the next door, and the next. "Tend this. Every three hours. Pass it on." Some doors didn't open. One opened and shut so hard the frame rang. Two corridors down, an old man held his jar to the light a long time and said his mother had been a tender, before the machines, and that she'd hummed while she worked. Then he started humming, badly, and didn't stop. Kesh, his arm strapped to his chest, took a dozen jars down the far side of the ring and came back without them.

The jars split the way Kesh had said they would. Nine the first day. By the second, the people who'd taken them were splitting their own, a finger of Green into a cup, a bottle, a soup tin, and carrying it across the hall. Wren kept a tally on her sleeve. By the third evening she had lost it, and for once in her life she let it go.

On the last night the heat in Ring Three went off. It was in the schedule, said the message from Pryce; the ring was being prepared. Clearance of the bulkhead corridor would begin at 0600. Below that, a second line: BERTH 1-114 REASSIGNED. In every window down the long curve of the ring, small green lights burned against the frost, and in the cold they were turning slower.

One day.

On the ninth day, Director Brisk came to the Ring Three bulkhead at six, with eight officers of Security and a welding rig on a sled, and stopped.

The corridor was full. Not crowded, which he would have known how to handle, but full: people sitting along both walls in coats and blankets, shoulder to shoulder all the way down the curve, and in every pair of hands, or between every two, a light. Jars, cups, bottles, a soup tin. Green, in the red emergency lighting. Nobody was shouting. Nobody was blocking anything. Every few minutes, somewhere along the line, someone turned to the person beside them and passed a spoon, and the person beside them began to stir.

He had planned for shouting. Wren could see it in the way his officers stood, spaced for a line that would break and a crowd that would push. No one here was pushing. No one was going anywhere. They were busy.

Kesh sat nearest the bulkhead with his arm strapped across his chest and a jar wedged between his knees, stirring left-handed, badly, on the count.

Brisk looked up at the oxygen readout over the bulkhead. Wren watched him do it. The number moved, and moved back. It had been doing that all night, up a hair and down a hair, refusing to settle. Neither better nor worse. Under it, in small amber letters: SIGNAL IRREGULAR.

"How many?" he asked her.

"I don't know," said Wren. "I stopped counting."

He looked at her for a long moment, as if that were the most alarming thing anyone had said to him in thirty years. Then he looked down the corridor and found, the way people always do, the smallest one. Pip sat against their mother's knees with his jar in his lap, stirring with a spoon too big for him, lips moving. In, and around. Up, and rest.

Brisk's hand went to the comm at his collar. Beside him, Pryce opened his mouth and closed it again. Wren heard her own heart, and counted it, and lost count.

"Control," he said. "Brisk. Tell the Council I need another hour."

It wasn't a promise. He didn't look at her when he said it, and he didn't send the welders away. He only stood there in the red light, between the bulkhead and the people, and did not give the order, and the hour began.

Two hundred and twelve tanks.

She came to the Lungs before the morning bell, the way she always had, though there was no berth waiting for her on the inside now and no one had told her to come. The hour had been followed by another, and then by others. Nobody had called it a reprieve. Nobody had taken the stripe off her sleeve, either.

She touched every tank. At forty-one she stopped, opened the inspection port, and stirred, her thumbs in the grooves. Four. She had refilled it herself from a jar Pip split for her, and it had taken.

The panel blinked at her, amber and patient. TANK 41: SIGNAL IRREGULAR. FLAGGED AS NOISE. EXCLUDED FROM AVERAGE.

Wren took out the log stylus. This time she wrote, by hand, in the remarks box at the bottom of the panel that the system kept for tenders and never read: Count complete. One tended.

Somewhere down the corridor, faint under the hum of the recyclers, she heard a spoon against glass. In, and around. Up, and rest. Someone else was doing the count.