Nau mai haere mai – welcome to this week’s newsletter.

It’s a truism that leader of the opposition is the toughest job in politics. But these days the description hardly seems adequate. The National Party has not only churned through five leaders since Jacinda Ardern was elected in 2017, it is vastly diminished as a parliamentary force – in both caucus numbers and ideological coherence. Tough job indeed.

As Massey University’s Richard Shaw argues, the greatest challenge for the party’s latest leader will be uniting his own MPs and reassuring the wider electoral base that the party is back in business.

This will be no easy task. Christopher Luxon is surrounded by previous leaders, each with their own supporters, and a clear divide between the party’s conservative (Christian) and liberal wings. Once a broad political church, National’s schisms will take some fixing.

You’ll find more to read in this newsletter or on our home page, including a preview of things to come when New Zealand switches to a traffic-light COVID management system on Friday, the Auckland boundary lifts a few days later and we all start planning a summer break.

Many thanks for your ongoing readership and support. Feel free to share this newsletter with others – until next week, mā te wā.

Finlay Macdonald

New Zealand Senior Editor & NZ Editor: Politics, Business + Arts

AAP

Luxon takes the controls – can the former Air NZ CEO make National straighten up and fly right?

Richard Shaw, Massey University

Once a broad political church, the National Party has become a house divided against itself. New leader Christopher Luxon faces huge challenges uniting both the party and its wider congregation.

Lynn Grieveson/Getty Images

Climate activism has gone digital and disruptive, and it’s finally facing up to racism within the movement

Nina Hall, Johns Hopkins University; Charles Lawrie, University of Sussex; Sahar Priano, Johns Hopkins University

By introducing tactics of direct action and digital mobilisation, Fridays for Future and Extinction Rebellion have renewed the climate movement and accelerated climate action.

Phil Walter/Getty Images

As Aucklanders anticipate holiday trips, Māori leaders ask people to stay away from regions with lower vaccination rates

Dion O'Neale, University of Auckland; Andrew Sporle, University of Auckland; Emily Harvey, University of Auckland; Steven Turnbull, University of Auckland

Vaccination and testing requirements will limit the number of infected people leaving Auckland, but cases are likely to spread across the country as people travel in the lead-up to the holiday season.

National Party interim leader Dr Shane Reti, flanked by colleagues, prepares to announce Judith Collins has been removed as party leader. GettyImages

As it selects a new leader, National needs to remember one thing – confidence doesn’t always equal competence

Suze Wilson, Massey University

New Zealand’s National MPs are set to elect their fifth leader in just four years to take on Jacinda Ardern’s government. What “habits of the unsuccessful” should they avoid in their next leader?

GettyImages

Judith Collins may be gone but New Zealand’s search for a credible and viable opposition is far from over

Richard Shaw, Massey University

Representative democracies require functional governments but they also need strong oppositions. At the moment, New Zealand has one of these things but not the other.

Shutterstock/Adel Newman

The ocean is our greatest climate regulator. It must be a stronger part of climate policy and action

Sarah Seabrook, National Institute of Water and Atmospheric Research; Elisabeth Holland, The University of the South Pacific; Lisa Levin, University of California San Diego; Natalya Gallo, University of Bergen

The ocean has been buffering us from the impacts of climate change, but it is reaching the limit of this capacity. Integrating ocean and climate policy will be crucial.

Scientists find variants by sequencing samples from people that have tested positive for the virus. Lightspring/Shutterstock

The hunt for coronavirus variants: how the new one was found and what we know so far

Prof. Wolfgang Preiser, Stellenbosch University; Cathrine Scheepers, University of the Witwatersrand; Jinal Bhiman, National Institute for Communicable Diseases; Marietjie Venter, University of Pretoria; Tulio de Oliveira, University of KwaZulu-Natal

There’s a new COVID lineage called B.1.1.529. It has a genetic profile very different from other circulating variants

Photo courtesy of Apple Corps Ltd

The Beatles: Get Back review – Peter Jackson’s TV series is a thrilling, funny (and long) treat for fans

David McCooey, Deakin University

An extraordinary technological feat, Get Back looks and sounds astonishingly good.

From our international editions

Border opening for skilled workers, students delayed a fortnight

Michelle Grattan, University of Canberra

The Morrison government has delayed its plan to open the international border on Wednesday to skilled workers and students, as it awaits more information about the Omicron variant of COVID. Cabinet’s national…

Omicron: why the WHO designated it a variant of concern

Ed Feil, University of Bath

Not much data, but lessons have been learned from the slow response to delta.

Are new COVID variants like Omicron linked to low vaccine coverage? Here’s what the science says

Jennifer Juno, The Peter Doherty Institute for Infection and Immunity; Adam Wheatley, The University of Melbourne

With low COVID vaccination coverage in southern Africa, some have suggested global vaccine inequities may be responsible for the emergence of Omicron.

The thousands of vulnerable people harmed by Facebook and Instagram are lost in Meta’s ‘average user’ data

Joseph Bak-Coleman, University of Washington

Research from Meta and some scientists shows no harm from social media, but other research and whistleblower testimony show otherwise. Seemingly contradictory, both can be right.

The pandemic is changing the way young people eat and how they feel about their bodies: 4 essential reads

Kate Kilpatrick, The Conversation

Rates of obesity and eating disorders like anorexia and bulimia both surged among young people over the past two years. Scholars explain why, and how parents can support kids dealing with body shame.

We reconstructed birdsong soundscapes from over 200,000 places: and they’re getting quieter

Simon Butler, University of East Anglia; Catriona Morrison, University of East Anglia

Research from across Europe and the US shows that as biodiversity declines, the natural world falls more silent.

Three steps Indonesia can take to create a solid domestic carbon market

Guntur Sutiyono, ClimateWorks Australia; Petra Christi, ClimateWorks Australia

Developing a carbon market in the electricity sector should not just provide further permission to emit: it should actively assist the government to phase out coal and to fund low-carbon technology.

Canada should look inward to address American protectionism

Noah Fry, McMaster University

Amid another flurry of U.S. protectionist measures, Canada should reconsider the value of global trade deals over bilateral agreements. But it should also support its own industries.

‘Squid Game’ highlights plight of South Korean workers sacrificed for nation’s economic gain

Greg Sharzer, University of Toronto; Sudol Kang, Korea University

Squid Game alludes to anti-worker violence that has permeated South Korean labour history, and reminds viewers of the need to overcome real inequalities.

Omicron: Senior Nigerian scientist considers fallout, and why travel bans are a waste of time

Doyin Odubanjo, Nigerian Academy of Science

The current spate of travel bans is rather hasty and irrational given that we know that the variant is in several countries already.