Planes can create clouds of tiny ice crystals, called contrails, and some studies suggest they could have an a significant effect on climate.
Globally, emissions from air travel account for only about 3% of the warming human activities are causing, but aviation affects our climate in a number of ways.
An analysis of some of the most serious cases of financial fraud in New Zealand shows white-collar offenders received discounted sentences despite a range of aggravating factors.
A New Zealand Court of Appeal decision set a precedent last month. Offenders who can prove their personal addiction played a role in their crime are now eligible for a shorter sentence.
Deputy Prime Minister Winston Peters, the leader of the New Zealand First party, maintains that no laws have been broken in his party’s funding arrangements.
The New Zealand First party, a government coalition partner, has received tens of thousands of dollars from a foundation whose trustees include the party’s lawyer and an ex-MP.
Since the Chinese plastic recycling market closed, 58% of New Zealand’s plastic waste goes to countries in South-East Asia.
Waste-to-energy incineration has been raised as a solution to the global plastic waste problem, but the technology adds pollution and greenhouse gas emissions and encourages more waste production.
While tariffs have a direct impact on exporters in the US and China, third-party countries like New Zealand are more affected by non-tariff barriers.
So far, New Zealand exporters have not been affected by the trade war between the US and China, but the Hong Kong crisis could easily embroil any foreign company.
As sea levels rise, it becomes easier for ocean waves to spill further onto land.
For every ten centimetres of sea level rise, the chances of a 100-year coastal flood increase three-fold. This means we'll have to build flood defenses or retreat from the coast.
Armed constabulary gather at Parihaka.
Almost 140 years after armed government troops crushed peaceful protests at Parihaka, New Zealand is beginning to make amends with the signing of a reconciliation law and a compensation agreement.
Critics of assisted suicide often raise moral objections while proponents focus on the trauma of terminally ill patients. But all arguments have a long history.
The arguments in favour or against euthanasia have a long history, going back to the Hippocratic oath that doctors still swear today.
Rapid population growth and increased consumption are now seen as the main drivers of environmental changes.
Discussions about climate change often skirt around the issue of population growth, but it is the main driver of rising carbon dioxide levels and many other environmental changes on a planetary scale.
Framing nature in terms of kinship can motivate people to care about the loss of biodiversity.
Our prevailing relationship with nature is based on framing the living world as a set of natural resources. This utility-based worldview perpetuates the drivers of ongoing biodiversity loss.
The atmosphere of Mars is thin and very dry.
NASA's Mars Reconnaissance Orbiter
The atmosphere of Mars is more than 96% carbon dioxide, but the planet is cold because its atmosphere is extremely thin, very dry and further away from the Sun.
The New Zealand government has announced a partnership with the farming sector to develop voluntary measures to reduce farm emissions.
The New Zealand government's decision to partner the farming sector to encourage voluntary reductions in farm emissions failed to acknowledge that agricultural emissions also affect water quality.
The New Zealand robin is a small and ordinary-looking songbird, but it can take down enormous invertebrate prey and hide morsels for later consumption.
The New Zealand robin has learnt to hide left-over food for later consumption, and it turns out that male birds with the best spatial memory have the greatest breeding success.
Canadian Prime Minister Justin Trudeau and New Zealand Prime Minister Jacinda Ardern
arrive at the Commonwealth Heads of Government 2018 meeting in Windsor, England, in April 2018. New Zealand moved from the first-past-the-post electoral system in 1993 to a system that helped put Ardern in power.
(AP Photo/Frank Augstein)
Unlike Canada's newly elected House of Commons, New Zealand’s parliament reflects the will of voters. So do other proportional representation systems. Canada has plenty of choice.
Abu Bakr al-Baghdadi.
Islamic State video/EPA
From US captive to head of Islamic State, the life of Abu Bakr al-Baghdadi, who died in Syria.
Ne Zha is a rebellious boy with supernatural powers who wreaks havoc – and he is a box-office phenomenon.
Chengdu Coco Cartoon
Chinese animated film Ne Zha is a box office phenomenon, but it also has a surprising story to tell about raising the ideal 'guai' child – for the family, and for the state.
Rapid and voluminous volcanic eruptions around 252 million years ago can be linked with a mass extinction event.
There is evidence for catastrophic climate change from protracted volcanic eruptions in the past, but since the 1950s the emissions we produce far exceed those from volcanic activity.
New Zealand’s PM Jacinda Ardern, police minister Stuart Nash (right) and the minister for Christchurch regeneration Megan Woods announcing stronger gun laws and the creation of a firearms registry.
A register of all firearms is part of the next stage of New Zealand's gun law reform, following the Christchurch mosque shootings.
Fat activists argue fat is the most appropriate word to describe their bodies.
The British Psychological Society is calling for a language change, from 'obese people' to 'people living with obesity'. But using the word obesity can reinforce rather than prevent stigma.
The best way to compare emissions from electric cars is to assess all phases of a life cycle analysis.
In New Zealand, where more than 80% of electricity is renewable, the carbon footprint of electric cars is 62% lower than that of fossil cars. But their lithium battery has other environmental impacts.