Sciblogs | Planetary Ecology Archives

Managing New Zealand’s greenhouse gas emissions from aviation

Guest Author • Mar 23, 2022

By Robert McLachlan and Paul Callister New Zealand at COP26 On 10 November 2021 at COP26 in Glasgow, New Zealand along with twenty-two other countries joined the “International Aviation Climate Ambition Coalition”, committing to “Preparing up-to-date state action plans detailing ambitious and concrete national action to reduce aviation emissions and submitting these plans to ICAO well in advance of the … Read More

‘We do all need to change our ways of living’: Interview with David Hall on climate change and democracy

Robert McLachlan • Jan 26, 2022

Dr David Hall is a political theorist with a research focus on climate change, sustainable finance, and land use. He has a DPhil in Politics from the University of Oxford and currently is Senior Lecturer at the School of Social Sciences and Public Policy, AUT University, and Chair of the Vice-Chancellor’s Sustainability Taskforce. He is also co-founder of Mōhio’s … Read More

New Zealand’s 2021 climate action

Guest Author • Dec 16, 2021

By Robert McLachlan 2021: the fourth year of the Labour-led government; the first in which it governs alone; the second year of the Covid pandemic; the last year before the Zero Carbon Act kicks in for real. What was achieved for the climate? In terms of actually cutting emissions, – like removing petrol cars and coal boilers – not a lot. Read More

New Zealand’s Emission Reduction Plan

Guest Author • Nov 23, 2021

By Paul Callister and Robert McLachlan Fifty years ago, on 26 November 1971, the film “Notes on a New Zealand City: Wellington”, directed by Paul Maunder, premiered on Wellington TV. The narrator asks if Wellington’s future will involve suburban sprawl, traffic, motorways, suburban shopping malls, and the decentralization of employment; or an alternative vision of medium-density … Read More

Why emissions pricing cannot do it alone

Robert McLachlan • Nov 16, 2021

By David Hall and Robert McLachlan There is strong agreement among economists that emissions pricing should play a central role in climate change policy. New Zealand has had a price on some carbon emissions through its Emissions Trading Scheme since 2010, although (COVID excepting) emissions have not yet fallen. Recently the scheme has been strengthened through higher prices, now … Read More

COP26: New Zealand’s new climate pledge is a step up, but not a ‘fair share’

Robert McLachlan • Nov 02, 2021

As the Glasgow climate summits gets underway, New Zealand’s government has announced a revised pledge, with a headline figure of a 50% reduction on gross 2005 emissions by the end of this decade. This looks good on the surface, but the substance of this new commitment, known as a Nationally Determined Contribution (NDC), is best assessed in emissions … Read More

Kāpiti’s zombie airport

Guest Author • Oct 28, 2021

Feature Image: Wrong airport, but the picture was too good to pass up. Zombies from Extinction Rebellion protest the expansion of Wellington Airport, January 2019. Source: Zombie Apocalypse Monthly. Kāpiti Coast Airport has hardly any flights and is living on borrowed time, but it just won’t die. Now a new report concludes that it “cannot remain operationally viable”. Read More

Electric aircraft – coming soon to save us, or all hype and greenwash?

Guest Author • Oct 23, 2021

By Paul Callister and Robert McLachlan Electric aircraft have arrived, but a lot has to happen to make commercial flights a reality. Can they live up to the hype, and can they reduce aviation emissions? We run the numbers. It’s not easy to keep up with the rapidly-changing world of electric aircraft. It can look like a blizzard of … Read More

Climate explained: how much of the world’s energy comes from fossil fuels and could we replace it all with renewables?

Robert McLachlan • Sep 15, 2021

How are fossil fuels formed, why do they release carbon dioxide and how much of the world’s energy do they provide? And what are the renewable energy sources that could replace fossil fuels? Fossil fuels were formed over millions of years from the remains of plants and animals trapped in sediments and then transformed by heat and pressure. Most … Read More

Who pays? Who changes?

Robert McLachlan • Aug 27, 2021

Let me introduce you to the good life. Climate solutions are often judged not just by whether they work – that is, by whether they reduce emissions – but also by whether they support a “just transition”. As Sam Huggard of the New Zealand Council of Trade Unions writes, “the costs of the necessary changes that deliver all of us … Read More