Arris

The Glasshouse is the last stop on the night line, and most riders sleep through it. Those who wake find a long white module, warm as a kitchen, where the air smells of soil for the first time in weeks. Mira Okonkwo has run it for eleven years. She keeps the lights on a twenty-six-hour day, because, she says, roses never agreed to ours.

Everything is weighed. Water comes up from the docks in sealed bladders, 340 litres a week; what the plants breathe out goes back down the line to the scrubbers. The roses are an old French variety, grown from cuttings that flew up in a lunchbox. In low spin they climb slower and their stems come out thick, almost woody, but the flowers open the same deep red.

“Up here everything is engineered. The roses are the one thing that still decides for itself.”

Two retired pilots, Hal and Teodor, take the night shift. They prune by headlamp, argue about aphids that cannot possibly exist up here, and sell nothing: every bloom goes to a hospital bed, a launch or a wedding on the ring. If you want one, come and water. Bring your own cup.

The secret, as far as I can tell, is patience and soil. Soil is the one thing the Glasshouse cannot make. For most of its eleven years it came up the line in sealed sacks from the farms on Ring 4, and Mira mixed it by hand on a table she built from a cargo pallet. Last spring she ran short, and the docks sent up what they had: forty kilos of crushed regolith from a survey rock, sifted and washed, still smelling faintly of iron.

She planted a new bed with it, the long one under the east window, and for a month nothing happened. Then everything happened at once. The bushes in the new bed are taller than the rest and a darker green, and they flower on a schedule of their own that pays no attention to the lamps.

Hal thinks it is the iron. Teodor thinks it is something else and will not say what, only that the thorns on the new bed are wrong. I asked him how a thorn could be wrong. He took my hand and ran my thumb along a stem. Every thorn came to the same clean edge, flat on one face, as if someone had gone along the stem with a file.

Mira does not like to talk about the new bed. She showed me the old roses instead, and the logbook where every bloom is written down: the day it opened, who it went to, and why. A child born on the ring. A pilot who did not come back. Two dockhands married under the east window at a quarter to four in the morning, because that was when their shifts allowed.

At the end of the night shift the lamps go amber, then out, and the module runs on the light from the corridor. Hal waters the last row. Teodor writes in the log. I asked whether I could take a rose from the new bed back down the line, and the three of them looked at each other for a long moment before Mira said no, kindly, the way you would tell a child not to touch a stove.

If you go, and you should, take the 03:47, ask for a lower pod, and get off at the end of the line. Water the old roses first.

At a quarter to four the platform at Arcology 7 is busier than the market below it. Couriers in rain shells check their wrists, a vendor folds a cart of steamed buns into a backpack, two students share an umbrella and one pair of earbuds: everyone is waiting for car 34, where the sleep pods start. The rain is the fine warm kind that falls here, out of the dark above the lamps; the platform roof sheds it into a channel, and the channel runs off toward the scrubber halls with everything else the city is finished with.

The cars are narrow and very clean. Twelve pods fold out of the walls, each with a reading light, a charge port and a bottle of water; breakfast is a rice ball and black coffee, delivered at 05:10. Nobody complains about the size. The point, says the conductor, is that you wake up in another district with your data still your own.

“You fall asleep under one set of neon and wake up under another. That still feels like magic.”

Jun Sato has ridden the 03:47 for six years. He carries what the network will not: a drive of medical records for a clinic on Ring 3, a ring for a proposal at the docks, once a live goldfish in a sealed bag. He wears his watch on the inside of his wrist so he can read it with his hands full, and he knows the timetable by heart, including the parts that are not printed.

“The board says the train leaves at 03:47,” he tells me, as the doors sigh shut. “It leaves at 03:47 and nine seconds. Everyone who rides it knows. Nobody knows why.”

Car 34 is quiet by four. The pods dim to amber, the rain draws long lines across the windows, and the train leans into the long curve under the Spire, where the city drops away and for a minute there is nothing outside but water and dark. Across the top of the window, past the rain, a thread of lamps hangs where the far side of the ring is, its own night shift under way. Jun does not sleep through it. It is, he says, the only minute in his day when nobody can reach him.

After the Spire come the farm decks, a kilometre of glass with the misters running behind it, and the air in the car goes soft and smells of soil; the windows bead on the outside where that breath meets the night. Then the scrubber halls, and the line runs the length of them. The stacks stand in rows in their own weather, each taller than the car is long, sweating down their sides into the dark, and the fog moves to the inside of the glass. Jun clears a port with his sleeve. A gantry goes by with a figure on it in a yellow shell, one hand on the rail, turning to watch us back. The air changes again, metal now, and for the length of the halls the rain outside stops. A kilometre past the last stack it is on the windows again.

Near the docks the board at the end of the car runs through its stops in three scripts: DOCKS, then GLASSHAUS, then SECTOR 9, then a line I do not catch before it clears. I ask Jun about it. He shrugs. Some nights, he says, there is a fourth stop. The train never stops there.

At 05:10 the rice balls come round, and at 05:20 the doors open on the docks, where the air is cold and smells of metal. Jun is gone before I have my bag down, a rain shell among rain shells, his watch already lit on the inside of his wrist.

Demand has outrun supply on most of the network. New cars arrive through next year, and three more night lines open in the spring: the Docks to the Glasshouse, Low Tide to the Spire, and a loop around the ring road. Charge your watch, bring earplugs, and ask for a lower pod.