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Coral bleaching alerts are becoming climate infrastructure

A coral reef can look permanent until heat changes it within weeks. When unusually warm water persists, corals may expel the algae that provide much of the

China’s disease-prevention plan will be tested between outbreaks

Disease prevention becomes visible when an outbreak is already frightening. Cameras show laboratories, emergency meetings and protective equipment. The mor

Regional air links are public infrastructure with airline economics

At a regional airport, a cancellation is rarely just a later holiday. It can mean a missed specialist appointment, a lost day of work, a student unable to

New Zealand needs apprenticeships that survive the economic cycle

An apprentice learns on two clocks. The first is the daily clock of the job: tools, deadlines, customers and the judgement of experienced workers. The seco

Healthy homes must be safe in summer as well as warm in winter

New Zealand’s housing-health debate has been shaped by cold bedrooms, condensation and mould for good reason. The healthy homes standards require heating,

The internet’s most important repair job happens at sea

When a cloud service crosses an ocean, the word “cloud” hides a remarkably physical journey. Data travels through glass fibres inside armoured cables resti

Sewage can reveal antibiotic resistance before hospitals see the whole picture

A hospital laboratory sees the patients who were tested. A sewer receives biological traces from almost everyone connected to it, including people who neve

China is giving EV batteries a digital identity. The hard part begins when cars retire

An electric vehicle can leave a showroom as a clean-technology success and reach the end of its first life as a difficult industrial object: heavy, high-vo

Water reform will be judged underground, not in Parliament

Most water infrastructure is designed to disappear. A tap works, a toilet clears and stormwater leaves the street; the public rarely sees the reservoirs, p

School attendance is improving. New Zealand still needs to understand who is missing

At 8.45 on a winter morning, school attendance looks simple: a gate, a bell and a student either present or absent. By the end of a term, however, that bin