Rnz: Our Changing World

New video series: A turning point in the fight to preserve Aotearoa's natural environment.

Claire Concannon meets GERALDINE, the Gigantic and Extremely Radical Atmosphere-Lacking Device for Interesting and Novel Experimentation. Plus, a team of scientists and engineers designing plasma rocket thrusters for space travel with super-conducting magnets.

A Moriori musician, an ethnomusicologist and the Hokotehi Moriori Trust are part of a team helping to revitalise Moriori culture with 3D-printed replicas of traditional bone flutes from Rēkohu the Chatham Islands. Claire Concannon finds out more about the Moriori, music and manawa project.

In the last week, Hurricane Otis hit southern Mexico with little warning, and Cyclone Lola set a record for the earliest category five cyclone in the southern hemisphere. Climate change is making work tricky for weather forecasters. What might be in store for our upcoming El Niño summer?

Could your burger one day come with a plankton patty? Alison Ballance visits the Cawthron Institute's collection of more than 750 different strains of microalgae, where scientists are investigating these teeny organisms for new food ingredients and powerful painkillers.

In the ever-shifting streams and channels of a braided river, creatures must adapt to change. Claire Concannon joins a researcher on the spectacular Cass River near Tekapo for a spot of electrofishing and bird counting - part of a project seeking to understand this complex ecosystem and the threats it faces.

Giant penguins weighing up to 150 kilograms once roamed the waters around New Zealand. Claire Concannon speaks to a palaeontologist and learns about penguin evolution, extinct species that dwarfed today's emperors, and why Aotearoa is such a great place to study these birds that 'fly' through the water.

What happens to our muscles as we age? Claire Concannon finds out why muscles get weaker as we get older, and speaks with a researcher investigating why Olympic athletes live up to three years longer than the general population. Claire also meets a scientist studying what happens to muscles in children with cerebral palsy, seeking clues that could help.

The southern New Zealand dotterel is a true underdog of the bird world, with just 126 individuals at last population estimate. Claire Concannon tags along with a team of researchers attaching trackers to the birds. Their mission is to figure out where the dotterels go to breed, so these "plump little tomatoes" can be protected from introduced predators.

Broccoli and chocolate. Prawns and vanilla. According to food pairing theory, these culinary matches should go together as well as macaroni and cheese, or peanut butter and jam. But do they really? Senior producer Justin Gregory meets two researchers digging into the sensory science of food.

The Great Ireland vs. New Zealand Bird-off returns for part 2 to decide once and for all which island nation boasts the best birds. Our avian aficionados return to argue their case in front of judge Claire Concannon. Who will fly to victory? Listen to find out - plus learn about the crazy life cycle of the cuckoo and the weird feathers of the kiwi, among many fascinating facts and tales from the world of birds.

Welcome to the great Ireland vs New Zealand bird-off. Two islands, a world apart - but which country has the better birds? Two bird nerds champion their nation's birds across four categories in an avian battle for the ages, with Claire Concannon judging the best of the feathered best. Which country will emerge victorious? Listen to find out.

We've probably all experienced a little bit of tinnitus, or ringing in the ears, at some stage in our lives. But for some people this phantom sound in their brain can be loud, and permanent, and completely debilitating. Claire Concannon speaks to a group of scientists at the University of Auckland who've been researching ways to help for years, and have developed a digital therapy with promising trial results.

Dr Kate Thomas has exercise on the brain. As an exercise physiologist, she researches how exercise and fasting can change the energy sources our brain uses. And as an ultramarathon runner, she chases that runner's high on gruelling mountain races.

How can swaying buildings help diagnose breast cancer? Katy Gosset meets a team of engineers taking inspiration from earthquake engineering to design a new, cost-effective device to help detect breast cancer. Listen to find out how the device works, and how it could help more women get tested sooner.

This year marks the 75th anniversary of the rediscovery of the takahē. Claire Concannon sits down with former Our Changing World presenter and takahē superfan Alison Ballance to chat about her new book, Takahē: Bird of Dreams. Plus, we replay Alison's 2018 episode marking the 70th anniversary of the momentous rediscovery, and discuss what's happened in takahē conservation since.

Every year, tens to hundreds of seabirds fall out of the sky across Auckland city. Disoriented by the bright lights, Cook's petrels crash-land and collide with buildings - but a dedicated group of volunteers hit the pavement to rescue them. Join us on 'Petrel Patrol' and go behind the scenes at a bird hospital, where squid smoothies and bath time help the seabirds find their wings again.

Are all snowflakes really unique? What makes some snow better for skiing? And what's the difference between snow and hail? Join Alison Ballance and Katy Gosset as they hit the slopes of Mt Ruapehu and discover a science wonderland of snow.

Nuclear fusion is a holy grail for researchers seeking clean energy. This week we head to the south of France with ABC science journalist Carl Smith in this episode from the Strange Frontiers series. Here, a multi-billion-dollar collaboration between several countries called ITER is trying to make industrial-scale nuclear fusion a reality.

Tauranga-based producer Justine Murray dons some gumboots and meets some teeny-tiny cockles as she joins a team surveying the Waihi estuary. Professor Kura Paul-Burke is weaving mātauranga Māori and western science together to address questions that local iwi have about the health of the estuary, and what can be done to improve it.