Emerging hot topics

1. Vaping

A vaping device, sometimes known as an e-cigarette, is a handheld device that uses battery power to heat a liquid, creating a vapour that can be inhaled. The vapour may contain nicotine, the addictive compound found in conventional tobacco cigarettes. Vaping is generally considered less harmful than tobacco smoking but there is insufficient evidence to say that vaping is safe. At least 80 chemical compounds have been detected in e-cigarette vapour and we don’t know how all of them affect human health when inhaled. Because vaping is new, we also don’t know the long-term health impacts. This is the focus of ongoing research.

While the long-term health impacts of vaping are unclear, the safest approach is for non-smokers to avoid vaping. Nicotine is a highly addictive substance. There are concerns about the wide availability of vaping products in an unregulated market, and how easily young people can access nicotine-containing products as a result. A recent study of Year 10 students (aged 14–15 years) in Aotearoa New Zealand shows that 3.1% vape daily. Regular (but not daily) use of e-cigarettes has increased from 3.5% in 2014 to 12% in 2019. The proportion of non-smoking youth experimenting with vaping has also increased, from 11.1% in 2014 to 24.6% in 2019.

In contrast, for heavy smokers, vaping may be one useful strategy to reduce harm and help people to quit smoking (when combined with other support mechanisms). While vaping is likely to have long-term health impacts, the growing body of evidence suggests that vaping is less harmful than smoking.

Ministry of Health – Manatū Hauora

The Smokefree Environments and Regulated Products (Vaping) Amendment Bill was introduced to Parliament on Monday 24 February 2020. The Ministry of Health states that vaping may contribute to Aotearoa New Zealand’s Smokefree 2025 goal, by helping people quit smoking—as long as it does not act as a ‘gateway’ for children and non-smokers to develop a nicotine habit.

Read the Vaping Amendment Bill and the Ministry of Health’s position statement on vaping

The Vaping Facts website, produced by the Ministry of Health and the Health Promotion Agency, provides information for smokers who want to quit about the risks and possible benefits of vaping.

2. 5G and health

Office of the Prime Minister’s Chief Science Advisor

The roll out of 5G has begun in Aotearoa New Zealand and will become more widespread in the following years.  We’ve had a lot of questions about this so have put together some accessible information which you can read by clicking the button below.

3. PFAS contamination

Per- and poly-fluoroalkyl substances are a group of man-made chemicals used widely since the 1950s. Known for their water- and heat-resistant properties, they are used in products such as furniture and fabric protectants, manufacture of electrical equipment, and as an ingredient in firefighting foam.

The PFAS family comprises nearly 5000 known chemicals, which poses an analytical challenge, but two are of particular interest: perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA). PFOS was banned in Aotearoa New Zealand in 2011 and use of PFOA is restricted.

There are concerns about the health and environmental impacts of PFAS. These substances are very resistant to degradation, persist in the environment, and can accumulate in living organisms including humans. The complexity of the group of compounds makes determining levels in the environment difficult. Studies suggest that build-up of PFAS in tissue may be associated with adverse health effects.

However, everyday exposure in New Zealand is generally very low and the Ministry of Health advises that PFAS do not pose a significant public health risk.

An All of Government programme has been established to investigate potential contamination sites (e.g. training areas for firefighters, or areas affected by leachate from landfill) and examine health and environmental impacts specific to Aotearoa New Zealand.

Read more on the Ministry for the Environment website

A workshop on PFAS, involving academics and staff from government agencies from Australia and New Zealand, was held in September 2019 at the University of Auckland, identifying challenges and steps forward in managing PFAS in Aotearoa New Zealand.

Download the University of Auckland School of Environment’s workshop summary (PDF, 192KB)

Last updated: 23 January 2020

4. Myrtle rust

Office of the Prime Minister’s Chief Science Advisor

Myrtle Rust arrived in Aotearoa New Zealand in 2017 and is a threat to a number of native plant species. We’ve pulled together some accessible summary information on myrtle rust in the Aotearoa New Zealand context.

5. Kauri dieback

Kauri dieback disease is threatening kauri trees (Agathis australis) with extinction. It is caused by the pathogen Phytophthora agathicida and there is no known cure.

Keep Kauri Standing
Keep Kauri Standing is a one-stop shop for information about kauri dieback, containing the latest research, how to guides and background on mātauranga Māori.

The website is an initiative of the Kauri Dieback Programme, a partnership between Biosecurity New Zealand (Ministry for Primary Industries), Department of Conservation, Auckland Council, Waikato Regional Council, Northland Regional Council, Bay of Plenty Regional Council, Te Roroa and Tangata Whenua Roopu.

Further information is available directly from the Department of Conservation, the Ministry of Primary Industries, the Waikato Regional Council, the Northland Regional Council and the Auckland Council.

Kauri Rescue
Kauri Rescue is a project bringing together scientists, social scientists, iwi and community groups to implement citizen science tools for community control of kauri dieback. The project is funded by the Biological Heritage National Science Challenge and the Auckland Council.

Science education resources
The Science Learning Hub has several resources on kauri dieback:

• Kauri dieback
• Kauri dieback and mātauranga Māori
• Fighting kauri dieback
• Kauri dieback: Death in the Ngahere

Last updated: 3 March 2020

6. Genetic editing

The Royal Society Te Apārangi

In 2019, the Royal Society Te Apārangi released a comprehensive report on gene editing.

Read the report ‘Gene editing in Aotearoa’

Juliet provided commentary on the report for the Prime Minister.

Read Juliet’s briefing to the PM on gene editing

Last updated: 13 August 2019

7. Microplastics

World Health Organization

Microplastics were a hot news topic in 2019, with the release of a report from the World Health Organization (WHO).

Read the WHO microplastics information sheet

Read the full WHO report ‘Microplastics in drinking-water’

For what this means in Aotearoa New Zealand, check out this interview with one of our #RethinkPlastic planet members, Dr Olga Pantos.

Watch the microplastics interview on 1 NEWS

Resources for science education

The Science Learning Hub has written two articles relating to microplastics: microplastics and How harmful are microplastics?. The article Thinking about plastic – planning pathways explores plastic as a wicked problem and contains an interactive map that curates many of our resources.

Office of the Prime Minister’s Chief Science Advisor

For more on plastic, including microplastics in the Aotearoa New Zealand context, see our ‘Rethinking plastics’ report.

Visit the ‘Rethinking plastics’ section of our site

Last updated: 9 December 2019

8. Folate supplementation

Office of the Prime Minister’s Chief Science Advisor

A co-written report from the Office of the Prime Minister’s Chief Science Advisor and the Royal Society of New Zealand explored the health benefits and risks of folate.

Download the full report from Office of the Prime Minister’s Chief Science Advisor with the button below.

9. 1080

Parliamentary Commissioner for the Environment

The Parliamentary Commissioner for the Environment (PCE) reported on the use of 1080 in 2011. You can see download the complete report, a FAQ and an updated commentary on the PCE website.

Read the PCE report on 1080

Newshub also interviewed the former commissioner for the environment, Jan Wright, in 2018.

Watch and read the interview on Newshub

Resources for science education

The Science Learning Hub has written an article which covers resources on the science of 1080. It contains a 3 column timeline, which explores the history and science of mammalian pest control in New Zealand. It includes the pedagogical article 1080 – a wicked problem. This article helps guide teachers and students with using the science capabilities in a real-life context – specifically ‘use evidence’ and ‘critique evidence’.

Last updated: 3 March 2020

10. Climate change

Office of the Prime Minister’s Chief Science Advisor

The previous Prime Minister’s Chief Science Advisor, Sir Peter Gluckman, authored a report on climate change in 2013.