Nau mai, haere mai.

Supermarket shopping is a pain point for many New Zealanders. And with just three companies controlling the majority of the grocery sector, there is an overwhelming feeling that maybe we are not getting the best deal.

So, many New Zealanders will have been pleased to hear the Commerce Commission blocked the merger between Foodstuffs North Island and Foodstuffs South Island. Had the merger gone through, Foodstuffs would have dominated the grocery sector with 55% of the market share.

But blocking the merger is not enough, according to authors Lisa Asher and Drew Franklin. New Zealand’s supermarkets generate the highest annual revenue per store among developed nations, raking in the equivalent of US$27.9m, versus $19.56m in the United States, $7.7m in Germany and $17.02m in Ireland.

As Asher argues, “The Commerce Commission’s decision on the proposed Foodstuffs merger reinforces concerns about competition in New Zealand’s supermarket sector, as does the report from the Grocery Commission and the earlier grocery sector study.

"If competition creates better prices for consumers, then splitting up New Zealand’s concentrated supermarket sector is the logical next step.”

Logical, maybe. But the question is, of course, whether there is the political will to do that. To be honest, I am not holding my breath.

Debrin Foxcroft

Deputy New Zealand Editor

The Foodstuffs merger is dead – but that still won’t fix NZ’s over-concentrated supermarket sector

Lisa M. Katerina Asher, University of Sydney; Drew Franklin, University of Auckland, Waipapa Taumata Rau

New Zealanders have less choice over their grocery shop than consumers in most developed countries. Breaking up the existing supermarket conglomerates would be a next logical step.

Happy, sad or angry? AI can detect emotions in text according to new research

Sanghyub John Lee, University of Auckland, Waipapa Taumata Rau; Ho Seok Ahn, University of Auckland, Waipapa Taumata Rau; Leo Paas, University of Auckland, Waipapa Taumata Rau

A new model looked at more than 3.6 million sentences posted on X, with an 86% success rate in identifying the emotion being expressed.

The ‘world’s mayor’ – how Michael Bloomberg uses philanthropy to change the way cities are run

Tom Baker, University of Auckland, Waipapa Taumata Rau; Alistair Sisson, Macquarie University

The increasing influence of Bloomberg Philanthropies on cash-strapped city governments raises questions about the reliability of philanthropy over the long term – and its democratic legitimacy.

What ‘Jack and Jill’ can teach us about the (un)fairness of capital gains taxes

Richard Meade, Griffith University

Capital gains taxes are often lauded as the fair way to ensure everyone pays their fair share. But when you map out different tax scenarios, taxing capital gains many not be as fair as it seems.

Access to a GP can make all the difference in surviving lung cancer – and that is a problem for Māori

Ross Lawrenson, University of Waikato; Chunhuan Lao, University of Waikato

Half of all GP practices in New Zealand have closed their books to new patients. This means people are going on emergency departments for care – with deadly outcomes when it comes to lung cancer.

The common raupō once kept NZ’s wetlands and lakes thriving – now it could help restore them

Rewi Newnham, Te Herenga Waka — Victoria University of Wellington

Māori used all parts of raupō for weaving and food, but the plant also kept lakes healthy. This connection between cultural and ecological roles means its fate is closely linked with people.

Fostering a love of stories in a child’s first years is key to lifelong reading

Elaine Reese, University of Otago

Reading isn’t natural for humans – but storytelling is. Using decades of data, my new research highlights the role of parents in encouraging a love of books long before children start school.

From our foreign editions

Benjamin Netanyahu is triumphant after Hassan Nasrallah’s assassination. But will it change anything?

Ian Parmeter, Australian National University

Hezbollah’s leadership ranks have been decimated, but it has the capacity to re-establish itself. It also reportedly has an arsenal of 150,000 rockets, missiles and drones it can use to strike back.

Why is Mount Everest so big? New research highlights a rogue river – but deeper forces are at work

Gordon Lister, The University of Queensland

Mount Everest is growing surprisingly quickly – but are rivers or earthquakes responsible?

What makes a person seem wise? Global study finds that cultures do differ – but not as much as you’d think

Maksim Rudnev, University of Waterloo; Veli Mitova, University of Johannesburg

Real wisdom is about a balance between thoughtful reasoning, social understanding and emotional awareness.

Why it’s becoming harder to get super-rich in China

Kerry Brown, King's College London

In the past few years, the atmosphere has chilled for China’s billionaire class – an expert explains why.

AI probably isn’t the big smartphone selling point that Apple and other tech giants think it is

Lars Erik Holmquist, Nottingham Trent University

Apple’s share price took a large hit following its launch of the iPhone 16 with AI features.

Jimmy Carter at 100: how his life outside the White House proves he’s long been ahead of his time

Timothy Minchin, La Trobe University; Christopher Simmonds, La Trobe University

While not topping any lists for great presidents, Carter has long championed causes that have never been more relevant, from peace in the Middle East to climate change.

Tim Winton goes cli-fi – his dystopian novel Juice breaks new ground to face the climate emergency

Per Henningsgaard, Curtin University

Juice is a radical departure that asks readers to think differently about the future.

Companies keep selling harmful products – but history shows consumers can win in the end

Jonathan D. Quick, Duke University; Eszter Rimanyi, Duke University

Health leaders, researchers, advocacy groups, companies and the public have saved millions of lives by reducing the consumption of unhealthy products.

In storms like Hurricane Helene, flooded industrial sites and toxic chemical releases are a silent and growing threat

James R. Elliott, Rice University; Dominic Boyer, Rice University; Phylicia Lee Brown, Rice University

People living near these industries and emergency responders often have few details about the chemicals inside. New interactive maps pinpoint the risks.

What pathogen might spark the next pandemic? How scientists are preparing for ‘disease X’

Allen Cheng, Monash University

The COVID pandemic is ongoing, but scientists are on alert for any pathogen that might lead to another global outbreak of disease.