Our Changing World

In the Kaimai Mamuku ranges iwi-led conservation projects are tackling pests, removing weeds and planting natives to restore their whenua. Ngāti Hinerangi’s Wairere Mahi project has been trapping around the Wairere falls, and restoring a nearby system of lakes. The projects were born from the Jobs for Nature fund established by the government during the Covid-19 pandemic. But with that fund now finished where will the money to support future conservation work come from? The Manaaki Kaimai Mamuku Trust supporting these projects has some ideas.

A native species is taking over a jewel-in-the crown marine reserve. But what can be done? Centrostephanus, the long-spined urchin, is munching its way through the world-renowned rock walls and kelp beds of the Poor Knights Islands. DOC, University of Auckland scientists and a local hapū are running removal trials to investigate whether this might be a way to manage its march.

New Zealand is third in the world for the number of orbital rocket launches from our shores, sitting just behind the US and China. Phil Vine discovers some of the challenges raised by our push into the unknown and how it is changing the final frontier.

We know there are issues with sustainability within the fashion industry - can science help create a better future? Claire Concannon visits the Bioeconomy Science Institute in Rotorua to learn how New Zealand scientists are contributing to a massive multi-national project aimed at shaping the textile industry of tomorrow.

Since 2018 there's been a massive effort underway to clear over 110,000 hectares of South Westland of possums, rats and stoats. As the pest numbers have dropped the native flora and fauna seem to have flourished. The eradication stage is now nearing completion, and the focus is switching to maintenance. What will it take to keep the pests out long-term? And what can be learned from this large-scale project that could be used elsewhere in Aotearoa?

Some insects communicate using a secret language that we can’t sense – a language of vibrations. Now researchers at the Bioeconomy Science Institute are starting to decode what insects are saying to each other. They hope to harness this knowledge to develop new, chemical-free methods of pest control to help farmers and growers.

When do humans begin to interact with the world, and develop our sense of self? When we are born? Or might it start even earlier than that? Our visual systems are a key way that we perceive the world. New findings from the University of Waikato have shown that light can enter the womb and that we might already be learning about the world before we arrive in it.

A Southland company is growing red seaweed as a supplement that’s been shown to significantly reduce methane emissions in beef and dairy cattle. In our last summer science series episode, Cosmo Kentish-Barnes of the Country Life team heads to Bluff to learn more.

Why do we spend more than we need to? Is it mood, FOMO, the desire to impress? Or maybe some tricky behavioural triggers we're not even aware of? Our summer science series continues with an episode of the RNZ podcast Thrift, in which Katy Gosset gets to the heart of the matter with a consumer behaviourist, and shares some tips to stop us spending.

We’d all like to know how to live long healthy lives, and Kim Hill is no different. In this episode of Kim Hill Wants To Know, she talks to geneticist Dame Linda Partridge about the scientific breakthroughs that could mean the end to aging as we know it.