Our Changing World

RNZ Originals

4.7 (109)
SCIENCE
UPDATED WEEKLY

Stories of NZ science and nature from out in the field and inside the labs.

2 DAYS AGO

Voice of the Sea Ice 04 | More life!

Penguins that return to the ice in the middle of winter to lay their eggs. Seals that use cracks in the ice to keep their pups safe. And fish that have antifreeze proteins to survive in the icy cold waters... Antarctic life is tough, and full of surprises. Scientists are keen to piece together the Antarctic food web puzzle to better understand the interconnections, and to enable smart conservation decisions. Guests: Arek Aspinwall, University of CanterburyDr Michelle LaRue, University of CanterburyProfessor Steve Wing, University of OtagoLearn more: Meet other seals and penguins with Peregrin Hyde on his journey to South Georgia Island as part of an Inspiring Explorers expedition.In ‘Best Journey in the World’ from the Voices from Antarctica series, Alison Ballance travelled to Cape Crozier with a team from NIWA studying the emperor penguins.This series was made with travel support from the Antarctica New Zealand Community Engagement Programme. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

28 min
19 MAR

Voice of the Sea Ice 03 | Life!

What’s it like to live and work on the frozen ocean? A team of researchers is camping out on the sea ice to investigate the small critters that live on the bottom of the ice, and among the sloshy platelet ice layer just below it. From microalgae to krill, these tiny organisms hold up the big complex food web of Antarctica. Scientists are keen to understand these communities, and how they might shift as the sea ice cycle changes. Guests: Dr Natalie Robinson, NIWA Dr Jacqui Stuart, Victoria University of WellingtonDr Greg Leonard, University of OtagoLizzy Skelton, University of CanterburyDr Aimee van der Reis, University of AucklandSalvatore Campanile, Victoria University of WellingtonLearn more: Read the article that accompanies this episode: What lives in Antarctic sea ice?Dr Natalie Robinson spoke to The Detail in 2023 about the unprecedented sea ice conditions of that yearAlison Ballance's Voices from Antarctica series from 2020 explores what it’s like to live and work in Antarctica.This series was made with travel support from the Antarctica New Zealand Community Engagement Programme. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

27 min
12 MAR

Voice of the Sea Ice 02 | Antarctica's heartbeat

Step out on the sea ice just outside New Zealand’s Scott Base with researchers studying the physics of its annual cycle. Each year a massive patch of ocean around Antarctica freezes and then melts again come summer – Antarctica’s heartbeat. In winter, the ice effectively more than doubles the size of this already massive continent, and it plays a huge role in controlling our planet’s climate. Guests: Dr Inga Smith, University of Otago Antonia Radlwimmer, University of OtagoProfessor Wolfgang Rack, University of Canterbury Learn more: Read the article that accompanies this episode, Monitoring and measuring Antarctica's heartbeat.Listen to Physics on Ice from 2021 with Emeritus Professor Pat Langhorne and Dr Inga Smith.Alison Ballance's Voices from Antarctica series from 2020 explores what it’s like to live and work in Antarctica.This series was made with travel support from the Antarctica New Zealand Community Engagement Programme. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

29 min
5 MAR

Voice of the Sea Ice 01 | A land of ice and ambition

Welcome to Antarctica - a land of ice, extremes, and ambition. From historic expeditions to modern day science projects, Antarctic exploration is a unique, and dangerous, experience. We meet one researcher involved in an epic journey across the largest ice shelf in Antarctica, mapping a safe route through a crevassed landscape for others to follow. Plus, we learn about the different types of ice found in this vast, frozen landscape. Guests: Dr Daniel Price, University of Canterbury and Kea AerospaceNgā Taonga Sound and Vision archival audioLearn more: Read the article that accompanies this episode.Daniel did the route-finding for the SWAIS2C project. Veronika Meduna flew out to the camp in the 2023/2024 season to report on their activities.Daniel has spoken to Morning Report about Kea Aerospace’s work developing a solar-powered aircraftHear about other ongoing research in Antarctica from the latest research season, including investigating new methane seeps, and giant glass sponges.Learn more about living, and working, on the ice in the 2020 podcast series – Voices from Antarctica.This series was made with travel support from the Antarctica New Zealand Community Engagement Programme. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

30 min
26 FEB

Keeping tabs on Fiordland’s sharks and researching our deep-sea realm

Using acoustic tags and a network of receivers attached to the seafloor, researchers are tracking the movements of sevengill sharks in Fiordland. They want to understand how these apex predators adjust to changing ocean temperatures, particularly during marine heat waves. Plus, an international collaboration involving a high-tech German research vessel is exploring New Zealand’s deep-sea realm. Guests: Eva Ramey, PhD candidate, Victoria University of Wellington Dr Alice Rogers, Victoria University of Wellington Coastal Ecology Lab Dr Kareen Schnabel, NIWA Professor André Freiwald, Senckenberg am Meer Research Institute Dr Cornel de Ronde, GNSLearn more: Read the accompanying article. Listen to this 2016 episode about the Great white sharks of Australia and New Zealand.RNZ journalist Kate Green also hopped aboard the RV Sonne to find out about its technology and capabilities.This is not the first time the RV Sonne has been in New Zealand waters, one previous expedition also involved investigations of underwater volcanoes.Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

26 min
19 FEB

Recruiting the birds to help reforestation, and investigating ADHD and fidgeting

People with ADHD often fidget more than those without. Why might this be? Does it help them focus? Or distract them further? An Auckland Bioengineering Institute researcher has teamed up with the Mātai Medical Institute in Gisborne to investigate this using advanced MRI techniques. And at Waikereru ecosanctuary, local birds are being enlisted in a trial to help speed up the regeneration of native bush. Guests: Professor Justin Fernandez, Auckland Bioengineering InstituteDr Gil Newburn, Mātai Medical Institute Professor Dame Anne Salmond, Waikereru EcosanctuaryLearn more: Read the accompanying articles: Recruiting the birds to bring back the bush and Why fidgeting might be a good idea.In 2017 Alison Ballance did a story about The 1769 Gardenwhere she spoke to the garden designer, curator and local botany expert.To learn about the Mātai Medical Institute, listen to The advances in MRI coming out of Gisborne from November 2024.The Mātai Medical Institute is also involved in research into recovery post meth addiction, concussion in teenage rugby players, and muscle development in children with cerebral palsy. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

26 min
12 FEB

Trapping to help whio and searching for extreme life

The Eastern Whio Link project has been working to restore the whio or blue duck population in the rivers of the Waioeka Gorge. Sam Gibson, aka Sam the Trap Man, explains why he thinks the project has been so successful, and what he loves about these scrappy little ducks. Then, Professor Matthew Stott speaks to Claire Concannon about the complexities working on an active volcano in Antarctica, and what they hope to learn from the microbes they find there. Guests: Sam Gisbon, Eastern Whio LinkProfessor Matthew Stott, University of CanterburyLearn more: Read and see more photos in the accompanying articles: Searching for extreme life and Trapping to help wild whio.Head on to the slopes of Mount Erebus, and into an ice cave with Alison Ballance and Craig Cary in this 2011 episode. Matthew Stott also works with heat-loving microbes in Rotorua, including some that appear to have broken the ‘rule of thumb’ and are only found in New Zealand.Sam the Trap Man has also shared some yarns about bush life with RNZ’s Saturday Morning.Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

27 min
5 FEB

Your friendly local environment centre

All around New Zealand, people are trying to make things just a little bit better for their communities. The 22 Environment Centres, or Hubs, found throughout the country aim to help with this. Claire Concannon visits the Tairāwhiti Environment Centre to learn about their three pou of waste minimisation, education, and biodiversity, and about the environmental projects they support. She also meets their close neighbours – Gizzy Kai Rescue – who are looking to balance the scales of local food waste and food scarcity. Guests: Steph Temple, Hub Coordinator, Tairāwhiti Environment CentreSam Rowland, Manager, Tairāwhiti Environment CentreLauren Beatty, Gizzy Kai RescueDr Sarah Boyle, Wai Connections TairāwhitiLearn more: Visit the websites of Tairāwhiti Environment Centre, Gizzy Kai Rescue, the Every Bite programme, the Aotearoa Food Rescue Alliance, and Wai Connections.Learn about other food rescue programmes around the country, including in Hawke’s Bay and Porirua.Another conservation project in Tairāwhiti is aimed at bringing a beautiful endangered plant back from the brink.Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Go to this episode on rnz.co.nz for more details

26 min

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4.7

out of 5

109 Ratings

Our changing world is my favourite program 🤗

03/06/2023

Sue Penman

This is such an Awesome program! There is so much to learn about our changing world
Our changing world

11/05/2023

Stitcynama

Wonderful to find Aotearoa/NZ cutting edge science communicated so very well. Thank you.
Science!

08/07/2021

9193209735978234

This podcast makes me excited about Science. The new presenter is so good at explaining things in normal human words. And the sound effects! I love it, always play it to my kids.
Great!

24/06/2021

foztr

Just listened to the Catlins bat episode and I had no idea there were such cool things happening just down the road. Thanks RNZ for keeping us in the loop!