Rnz: Our Changing World

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 v

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 addictio

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

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 aime

Trapping is hard mahi, especially on rugged terrain thick with vegetation. If you need to check a trap frequently to clear it and refresh the lure, the kilometres of bush bashing quickly add up. Plus, in areas where kea are found, trap options are limited by concerns for these curious and intelligent parrots. A team in Queenstown are investigating if the latest ‘smart’ traps – equipped with cameras, AI-powered to recognise specific targets, and networked so they can communicate and be operated remotely – might be the answer.Guests:Paul Kavanagh, project director, Southern Lakes SanctuaryPhillip Green, field and technical advisor, Southern Lakes SanctuaryLearn more:Country Life tagged along with the Halo project, part of Predator Free Dunedin, who are also trialling networked AI traps just north of the city.One of the Southern Lakes Sanctuary hubs at Makaroraisfocused on trapping to protect mohua, and they are trialling an AI method to identifyindividual birds by their song.In the Catlins, a team are battling

The summer science series continues with an episode from RNZ podcast Country Life. From a block of gorse-infected scrubland on Banks Peninsula, renowned botanist Hugh Wilson has spent half a lifetime growing Hinewai Reserve into a 1600-hectare paradise of regenerated native forest by leaving nature to it. Cosmo Kentish-Barnes visits to learn more.The Country Life podcast takes you all over the motu to hear the extraordinary stories of every day rural New Zealand. Hosted and produced by Sally Round, Cosmo Kentish-Barnes, Duncan Smith and Gianina SchwaneckeListen to more Country Life episodes.Guest:Hugh Wilson, botanistSign 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

The summer science series continues with an episode from RNZ podcast Black Sheep. Freddie Angell was New Zealand's most notorious wildlife smuggler. His repeated attempts at stealing and exporting native wildlife in the 1990s, including kea and tuatara, made him all but a household name. William Ray speaks to documentary-maker Andy MacDonald about his extraordinary story. Black Sheep is an RNZ podcast produced and presented by William Ray.Listen to more episodes of Black Sheep.Guest:Andy MacDonald, documentary-makerSign 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

The summer science series continues with an episode from Tune into Nature, a podcast about New Zealand wildlife and wild places, and the people who look after them. Independent producer Karthic SS visits the Mokomoko Dryland Sanctuary Central Otago. Here, a team is working to bring back endangered lizards – Otago skinks and grand skinks – to the drylands wilderness they once lived in. These species are true wildlife underdogs – so rare and out of sight, not many people know they exist.Tune into Nature is a podcast produced and presented by Karthic SS.Listen to more Tune into Nature episodes.Guests:Grant Norbury, ecologist and chairperson, Central Otago Ecological Trust (COET)Anna Yeoman, science communicator and trustee, COETCarey Knox, herpetologist, Southern ScalesKathryn Longstaff, Department of Conservation (DOC) Central OtagoRoss Curtis , senior ranger, DOC Central OtagoJoanna, ranger, DOC Central OtagoThis episode was supported by OAR FM Dunedin, Science Communication at the University of Otago, and the

The summer science series continues with an episode from RNZ podcast Here Now. A love for tropical plants united Canterbury-based botanists Dr Julie Barcelona and Dr Pieter Pelser in the mid-2000s. The pair are renowned for their work on the large and unusual flower Rafflesia, which smells like a rotting carcass. They have found at least three new species on their adventures in the Philippines. Kadambari Raghukumar learns more about their spectacular discoveries.Featuring:Dr Julie BarcelonaDr Pieter PelserHere Now is an RNZ podcast produced and presented by Kadambari Raghukumar.Listen to more episodes from Here Now.Watch a video about this episode.Learn more:What will happen to plants in a warming world?Naturally rare and threatenedSign 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

Welcome to the summer science series! We're kicking off with two stories made by local podcast producers. First, on New Zealand's quest to become predator free by 2050, are we forgetting about mice? Dan Moskovitz, a student at Victoria University of Wellington, investigates what might happen to mice – and ecosystems as more areas become predator free. Then, a story from Xanthe Smith's Catch On podcast. Many people who consume fish stick to eating the fillets, meaning a substantial chunk of the whole fish gets chucked. A project seeks to tackle this food waste by connecting communities with kaimoana.Guests:Associate Professor Stephen Hartley, Victoria University of WellingtonDr Araceli SamaniegoBrent Bevan, Department of ConservationChris Jupp, Kai IkaVera, Kokiri Marae Naenae HubLearn more:Listen to more episodes of Catch On, a podcast by Xanthe Smith for the Office of the Prime Minister's Chief Science AdvisorFind out about the Kai Ika ProjectDr Araceli Samaniego's paper, Small mice create

New methane seeps are being discovered in Antarctica, some now appearing in areas that researchers have been monitoring for years. These are areas on the seafloor where methane gas escapes out from under the ground through fissures or cracks. What is the extent of the seeps? How large is the gas reservoir they are being fed from? How much methane is escaping from the sea into the air? Why now? And does this have implications for further warming the planet? A team of NIWA scientists are racing to find answers.Guests:Dr Sarah Seabrook, NIWADr Leigh Tait, NIWALearn more:You can find all the papers referenced this episode in the write-up that accompanies it. Claire spoke to Sarah about her initial work on seeps and the microbes that are attracted to them in 2022There’s currently a massive project underway to investigate whether the West Antarctic Ice Sheet will melt under 2oC of warming. Veronika Meduna joined them on the ice last year.Listen to our recent episode about life on the seafloor under the ice, includi

New Zealand’s tuatara are the last remaining species of an order of reptile that was alive alongside the dinosaurs 240 million years ago. The rest died out about 65 million years ago, but in Aotearoa the tuatara live on, found on 32 offshore islands and in a small number of ecosanctuaries and zoos on the mainland. Now one researcher is investigating the microbial community that lives inside their gut. Are there also bacterial ‘living fossils’ to be found? And has their gut microbiome changed as a result of living in captivity on the mainland? Guests:Cam Hoffbeck, PhD candidate, Taylor lab, University of AucklandChye-Mei Huang, Ectotherm ranger, Auckland ZooLearn more:Read the article that accompanies this episode. Hear from another researcher who has been exploring the viruses found in tuatara.Cam has also spoken to Emile Donovan on Nights about her research.In 2014 Alison Ballance visited Orokonui Ecosanctuary to learn about the tuatara who had recently made the move to the cold climes of Dunedin.Our own mic

Dive under the Antarctic sea ice near Scott Base into the weird world of cold-water life. Pink sea angels, worms that look like intestines, ocean creepy crawlies that get as big as your hand... and mysterious giant glass sponges. These sponges are one of the strangest, and oldest, animals on Earth: surviving without light, eating bacteria and viruses, and making themselves out of silica they absorb from the water. In most parts of the world, they live at depths too deep to dive, making them tricky to study. But in the cold waters of McMurdo Sound, they can be found in shallower waters. Now an international team of scientists are unlocking some of their secrets. Guests:Professor Ian Hawes, University of WaikatoDr Jürgen Laudien, Alfred Wegener Institute, GermanyKatherine Rowe, University of WaikatoDr Erik Wurz, Wageningen University & Research, The Netherlands,Andreas Schmmider-MartÍnez, Universidad Mayor, ChileLearn more:Read the article that accompanies this episodeListen to The secret life of sea spong

For centuries Samoa's traditional healers have harnessed the power of the country's native plants as remedies for village ailments. Now scientists at the Scientific Research Organisation of Samoa are putting those plants under the microscope to unlock and understand how this traditional knowledge works. In this episode of Pacific Scientific from the ABC, tour the labs and lush gardens filled with plants that could hold the secret to battling diabetes, HIV, and cancer. Guests:Annie Tuisuga, Scientific Research Organisation of SamoaMaserotaOfoia, Scientific Research Organisation of SamoaBenaiah Une, Scientific Research Organisation of SamoaSekotilani Aloi, University of Samoa LecturerPacific Scientific credits:Series Creator: Carl SmithReporter: Adel FrueanProducer: Shelby TraynorSeries Producer: Jordan FennellExecutive Producer: Will OckendenABC Science Editor: Jonathan WebbLearn more:Read the article that accompanies this episode.Listen to more Pacific Scientific episodes.Sign up to the Our Changing World mon

Ngutukākā, or kākābeak, is a popular garden plant in Aotearoa. But in the wild, it is now rarer than kākāpō, with only about 100 individual plants surviving on steep, inaccessible cliffs. The East Coast is one of its remaining strongholds and the Tairāwhiti Ngutukākā Trust is on a mission to bring the taonga back. Veronika Meduna joins the inaugural Tairāwhiti Ngutukākā Festival to find out more about the community’s efforts to turn State Highway 35 into a Crimson Highway by rewilding this iconic native.

Invasive redback spiders are highly venomous, threatening both people and New Zealand’s native species. A team of scientists is developing a cunning tool to trap male redbacks, by concocting an irresistible spiderweb perfume. We visit 800 captive redback spiders in the lab, learn about their wild mating habits, and check out the “spider arena” where the redbacks’ signature scent is put to the test.

The MRI technique advances coming out of the Mātai Medical Research Institute in Gisborne have been described as ‘pioneering’, ‘groundbreaking’ and ‘world leading’. Claire Concannon speaks to chief executive and research director Dr Samantha Holdsworth to learn why, and about their big plans for the future.

About two hours south of Dunedin, in the Catlins, the Tautuku and Fleming rivers flow into the sea at Tautuku beach. Covered in native bush from headwaters to the ocean, this special catchment is home to many native, and some threatened, plants and animals. But there’s an ongoing battle. Browsing animal such as deer and pigs are destroying the undergrowth, while feral cats and stoats are predating on critters such as the mātātā, the South Island fernbird. We meet some of the people fighting back.

Every year in New Zealand, recreational hunters shoot more than half a million wild game. Most are shot with lead-based ammunition. Now, researchers are investigating what happens to that lead, and how much of it is getting into the food chains of humans and the endangered kea. Alison Ballance speaks to scientists at Nelson-Marlborough Institute of Technology, and kea conservationists and predator control experts at the Department of Conservation to learn more.

To keep their eggs safe, some birds build simple cup-shaped nests. Others craft elaborate fully enclosed domes, with porches, fake entrances and ledges. But is this intricate construction of nests a set, encoded behaviour? Or can birds adapt in different conditions? Researchers are keen to learn about flexibility in nest design, to better understand how different species might be able to respond as the climate changes.