A day under the canopy

Two flood models disagree about one street.

Aisha's team in Teesside models the Tees from the river up. Overnight, a group in Belfast ran the same storm from the sea in. They agree on almost everything, except Riverside Road.

That disagreement is the most useful thing on her screen. She opens both methods side by side to find out which assumption split them.

Crossing over: by eight, Belfast has her notes, and both teams change one thing.

Year 5 checks the rain gauge they built.

Thirty children, thirty gauges in thirty back gardens. Their readings go straight into the Tees flood model, and on the classroom screen they can see their own street in it.

Crossing over: one gauge read high all week. It turned out to be right: a blocked drain nobody had mapped.

One question, three answers, on purpose.

"What happens if energy prices spike 40%?" Three groups answer it independently: an agent model in Edinburgh, a household survey model in Leeds, a co-op of economists in Cardiff working from first principles.

Where all three agree, the decision is easy. Where they split, nobody picks a winner: the split is shown, and it becomes the next piece of work.

Crossing over: Leeds borrows Edinburgh's way of modelling commuters; Edinburgh borrows Cardiff's prices.

Maya buys lunch with her marble.

Her pocket money isn't in an app account someone else controls. It's a glass marble on her keyring that only pays when it's near her. Lose the phone, keep the marble.

Her school is one of forty trying it. Another region is testing cards, another is testing nothing at all, and all of them share what they find.

Crossing over: the trial's design came from a parents' group, not a bank.

The river sensors Aisha reads are made here.

Dafydd runs a shift at a mature-node chip fab: sensors, power electronics, parts for the flood gauges on the Tees. He started as an apprentice in 2028.

Crossing over: this morning's Riverside Road argument reaches the fab by two o'clock. The next batch of gauges gets a second sensor.

A retired plumber's idea gets modelled.

Anyone can submit an idea, and the modellers will have a go. There are no stupid answers. Graham's was about where storm water backs up in old terraces. It is in this month's open round, competing with a university team's version, and both have a modeller helping them.

Crossing over: whichever wins, the other's best part gets kept.

The briefing shows where the groups agree, and where they don't.

Severe flooding in the North West: 34% over nine days. The central team doesn't own any of the models. It checks them, keeps the standards that let them plug into each other, and makes sure nobody's method goes unchallenged.

Decisions stay with people. The models only make the options clearer.

A drought in Spain, traced to dinner tables in Sheffield.

Caoilfhionn couples climate to farming to food prices to household budgets. The pieces come from different groups in different cities. Her job is the joins between them.

Crossing over: the clearest way to show it came from a games studio in Manchester.

A games studio hands something back.

They build their worlds on Canopy's public tools. Tonight they publish a faster way to draw rivers, because the flood teams asked for one last month.

Crossing over: by morning, Aisha is using it.