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The Sustainable Hour no. 587 | Transcript | Podcast notes
On this special ‘open microphone’ Earth Day broadcast, The Sustainable Hour gathers voices from across the Geelong community – reflecting on responsibility, connection, and the shifting story of how we relate to life on Earth.
Earth Day is not just a date in April. It is a way of living – grounded in care, connection, and a widening understanding of life on this planet. From local leaders to global perspectives, from personal memories to emerging science, a common thread runs through it all: we are part of something larger, and how we choose to live now matters.
. . .
Christine Couzens, Victorian Member of Parliament for Geelong, opens with a reminder that Earth Day is lived locally, in our waterways, coastlines, farms and communities. The theme “Our Power Our Planet” speaks directly to the choices we make every day – in our homes, workplaces and shared spaces.
Mik Aidt reflects on a profound shift underway in science: with the help of AI, researchers are beginning to uncover the structure of whale communication. While not yet fully understood, the discovery of patterns, dialects and cultural transmission challenges a long-held human assumption – that meaningful language belongs only to us. This insight expands the circle of beings that matter, and calls for a rethinking of the laws and systems that govern life on Earth.
Colin Mockett OAM’s Global Outlook highlights emerging momentum beyond traditional climate negotiations, including a new international initiative to phase out fossil fuels, as well as rapid progress in electric heavy transport – challenging outdated narratives about what is possible.
Leo Renkin from The Pulse reflects on the delay between knowing and acting, and the urgency of learning from that gap.
John Shone from Naturemakers introduces the concept of an “earthmark” – the imprint each of us leaves through our daily actions, relationships and memories. Through deeply personal stories, he invites listeners to reflect on their own connection to land, history and responsibility. What is your earthmark? Where do your footsteps lead, and what do they contribute?
Robert Patterson from Swift Tiny Homes brings the conversation to housing and community resilience, sharing a local initiative to build tiny homes in Geelong as a practical response to housing insecurity – a reminder that sustainability includes how we care for each other.
Mitch Pope, Greens candidate and video blogger, offers a moving tribute to the ocean as a source of identity, healing and life. His reflection is both gratitude and warning: the ocean has given us everything, and now it is showing clear signs of distress. The call is simple but urgent – to act, to protect, and to restore.
As the Hour closes, the message becomes clear:
• Be aware • Be earthy • Be together • Be responsible
. . .
NEW SONG
– An Earth Day anthem that reminds us we are not the only voice on this planet, inviting us to live responsibly within the wider circle of life. Inspired by our guests in The Sustainable Hour no. 587
→ More songs from The Sustainable Hour’s Force of Life Collective
. . .
“Our Mother Ocean isn’t hiding the pain anymore. Coral reefs are bleaching, kelp forests are being lost, ecosystems are overheating. We’re part of the ocean once sang with life. They now sit silent for decades.
We treated our ocean and the rest of the natural world as infinite and disposable, not showing much of the care for the harm our activities are causing to the rest of life on Earth. Pileaged, disrupted, blasted, and done more harm to the ocean than we can be forgiven for. We have to do what we can to right our wrongs, even if we weren’t the ones who caused it. I wanted to put a call out to everyone listening.
I want you to think about what the earth has given to you, how it has impacted you and your life and been there for you and carried you through this life. And I want you to consider what you might do to help make a positive impact for the natural world, because the ocean and the rest of living world is currently on life support.”
~ Mitch Mope, Greens Candidate and First Class environmentalist
→ Subscribe to The Sustainable Hour podcast via Apple Podcasts or Spotify
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We at The Sustainable Hour would like to acknowledge the traditional custodians of the land on which we are broadcasting, the Wadawurrung People. We pay our respects to their elders – past, present, and emerging, and extend that respect to all First Nations people.
The traditional custodians lived in harmony with the land for millennia, nurturing it and thriving in often harsh conditions. Their connection to the land was deeply spiritual and sustainable. This land was invaded and stolen from them. It was never ceded. Today, it is increasingly clear that if we are to survive the climate emergency we face, we must learn from their land management practices and cultural wisdom.
True climate justice cannot be achieved until Australia’s First Nations people receive the justice they deserve. When we speak about the future, we must include respect for those yet to be born, the generations to come. As the old saying reminds us: “We do not inherit the Earth from our ancestors; we borrow it from our children.” It is deeply unfair that decisions to ignore the climate emergency are being made by those who won’t live to face the worst impacts, leaving future generations to bear the burden of their inaction.
“The Indigenous worldview has been marginalised for generations because it was seen as antiquated and unscientific and its ethics of respect for Mother Earth were in conflict with the industrial worldview. But now, in this time of climate change and massive loss of biodiversity, we understand that the Indigenous worldview is neither unscientific nor antiquated, but is, in fact, a source of wisdom that we urgently need.”
~ Robin Wall Kimmerer, weallcanada.org
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“Enough of the idolatry of self and money! Enough of the display of power! Enough of war! True strength is shown in serving life.”
~ Pope Leo XIV, 11 April 2026
Written in the spirit of Earth Day, these are Mik’s reflections over how we create a shift in society that “can move us from knowing to acting.” Posted on Substack.com
What do you think? The comments field is open at the bottom of the substack post.
Earth Day 2026 events in Australia
THE GIANTS screening + Q&A With Dr. Bob Brown and Directors
Type: General Earth Day Event
Date: April 22, 2026
Time: 11:30
Duration: 2 hours
Location: IMAX
THE GIANTS explores the intertwined fates of trees and humans in this cinematic portrait of environmental folk hero and icon Dr Bob Brown who took green politics to the centre of power. From a seedling to forest elder THE GIANTS interweaves Bob’s story with the life cycle of the ancient trees he is fighting for. The hidden life of the forest is brought to life by cameras rigged high in the tree canopy, immersive point cloud animation generated from 3D tree scans, and thought-provoking insights by the likes of David Suzuki and Merlin Sheldrake. Drawing on Bob’s lifetime of activism, from the Franklin to the Tarkine, THE GIANTS ignites an urgent conversation about the right of the Forest to exist and challenges the audience to write the next chapter. This screening and Q&A is running in collaboration with Vic Health and Melbourne Museum Education’s Climate Commons Program and will screen a 90 minute version of The Giants.
Saving Rainforests: Bob Brown in Conversation
Type: General Earth Day Event
Date: April 22, 2026
Time: 19:00
Duration: 1 hour
Location: Melbourne Museum
Click here to register
Environmentalist Bob Brown and Museums Victoria’s Curator of Mammals, Dr Kevin Rowe join forces for an in-depth discussion on temperate and tropical rainforest ecosystems. Celebrating Earth Day and our newest permanent exhibition, Our Wondrous Planet, this discussion will confront the devastation of deforestation, climate change and other impacts that threaten the resilience of rainforests globally, while highlighting the research, partnerships, community leadership and grassroots action working to safeguard ancient forests for generations to come.
Earth Day Special: Climate Fresk and One Home
Type: Education
Date: April 22, 2026
Time: 17:30
Duration: 3 hours
Location: Melbourne
Email: melanie.dcs94@gmail.com
Phone: 0489 299 983
Join us this Earth Day for a collaborative Climate Fresk workshop with One Home, where science, collective intelligence, and emotion reconnect us with our shared home: Earth. Explore the drivers of climate change, see how they interconnect, and work together on solutions as part of a living system. During the Emotions phase, enjoy a special screening inspired by The Overview Effect — a moment to pause, breathe, and remember what we’re protecting: our fragile, interconnected planet. 📍 Climate Fresk is a globally recognised, science-based workshop built from IPCC reports, designed to turn complexity into understanding and action. Construct your visual “Fresk,” reflect, feel, and act.
Curiosity Crew: Arts and Craft – Earth Day
Type: Art & Culture
Date: April 23, 2026
Time: 16:00
Duration: 45 mins
Location: Glenroy LibraryGlenroy, VIC
Click here to register
Glenroy LibraryGlenroy, VIC Thursday, April 23 • 4 PM – 4:45 PM Weekly craft sessions for primary aged children to have fun and create. Celebrate Earth Day by reusing our damaged CDs to make an earth themed noisemaker/drum. This session is for ages 6 -12 , and the activity may not be suitable for younger children. Bookings essential. “Part of the After-School Activities collection
Earth Day at Melbourne Museum
Type: Education
Date: April 22, 2026
Time: 09:00
Duration: 9 am to 8 pm
Location: Melbourne Museum
Email: mvbookings@museum.vic.gov.au
Phone: 13 11 02
Celebrate Earth Day at Melbourne Museum with a full day of programming spanning IMAX screenings, digital immersive realms and enlightening conversations. Living treasure and icon of the Australian environmental movement, Bob Brown joins us for two public events this Earth Day. Book in to experience THE GIANTS documentary at IMAX followed by a live Q&A with Bob Brown and directors. Or join us in the evening for an in-depth conversation with Bob Brown and Museums Victoria’s Curator of Mammals, Dr Kevin Rowe on temperate and tropical rainforest ecosystems and the crucial work taking place locally and internationally to safeguard these ancient forests for generations to come. Make a day of it by experiencing the magic of old growth forests in our new digital experience THE GIANTS IMMERSIVE, included with museum entry, and exploring our newest permanent exhibition, Our Wondrous Planet.
→ See more on www.earthday.org/earth-day-2026
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Temperature trends
March 2026 was the fourth-warmest March globally, with an average surface air temperature of 0.53°C above the 1991–2020 average for March.
Global average temperature was 1.48°C above the estimated 1850–1900 pre-industrial baseline.
It was the second-warmest March on record in Europe. Almost all of Europe was warmer than average, with the strongest anomalies over northwest Russia, northern Fennoscandia and the Baltic States.
The global-average sea surface temperature for March 2026 over 60°S–60°N was 20.97°C, the second-highest value on record for March, just below the 2024 record.
Source: EU’s Copernicus
Earth’s energy imbalance
Earth’s current energy imbalance is equivalent to each person on the planet, 8.2 billion people, having installed 924 lightbulbs, each burning 100-Watt at full time, 24 hours a day.
The Earth’s energy imbalance is the difference between the amount of incoming solar radiation that heats the planet and the outgoing radiation of all types that escapes back into space.
One group of scientists wrote in a recent paper: “The absolute value of Earth’s energy imbalance represents the most fundamental metric defining the status of global climate change, and will be more useful than using global surface temperature.”
→ NASA via ClimateCasino:
Earth is Heating at a Rate of Over One Million Hiroshima Bombs Every Day!
“Our lasting legacy to the planet is unbearable heat.”
Black out in real time
“It’s wild we’re very likely less than a year away from long stretches at or near 2°C warming and there is zero public acknowledgement or discussion. I know mainstream news and elected officials are captured by big money and have been for years… but still, it’s so eerie to experience the black out in real time. There is absolutely no guarantee civilization can withstand temperatures that high, this fast.
In a functioning society Governors and Mayors would already be prepping new firefighting plans, bolstering power grids and infrastructure, rolling out awareness campaigns, etc etc. But as we all know “functioning society” would be low on the list of descriptors most would use to characterize the U.S. and Western nations these days.
Remember to have a plan for quick evacuation, clean water, food, medical care etc. It might get nuts in a way that defies what we can imagine.”
~ Adam Mckay on Substack
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Say thank you to the Earth with a tree
| Colleen B. Filippa, Founding Director, Fifteen Trees, wrote: This year, for Earth Day – we are looking for a grand gesture! We’re asking you to consider purchasing one tree as a gift for the planet. At $9.65 – about the price of a glass of wine or a coffee with a muffin – we hope to raise funds to plant native trees this winter in Tasmania/Lutruwita. Rise to the occasion and purchase a tree  Images: Left: NASA 1972 / Right: Artemis II 2026 Located on the northern coast of the island, the wonderful Wynyard Landcare Group will get their hands dirty on your behalf and plant your trees. The nursery has been notified and the site has been selected. We just need you to purchase a tree. Once the trees are in the ground and our website updated, we’ll send you a link so you can find your trees. If there’s one day to say thank you to the Earth, it’s this one. Tread lightly – Colleen B. Filippa (Founding Director | Fifteen Trees). P.S. Purchase your tree here |
5 HEADLINES TO LOVE
BECAUSE WHO DOESN’T NEED SOME GOOD NEWS RIGHT NOW?
| • China, Senegal and Scandinavia proving that transport and heavy industry don’t actually need oil. |
| • SA’s Coober Pedy sets new grid record, running on 100% wind, sun + batteries for five days |
| • Senate addresses climate disinformation in Australia |
| • Costa Rica on way to reversing deforestation |
| • Avitourism gets a boost as five African nations open a birding corridor |
This is what progress looks like – imperfect, ongoing and powered by people like you. Thank you for being a part of it.
– Team Future Super
BUILDING A FUTURE FREE FROM CLIMATE CHANGE AND INEQUALITY.
What the gas industry doesn’t want you to hear
We received this excellent newsletter from Greg Bourne from Climate Council today:
I know the fossil fuel system inside out because I was part of it.
I am a former President of BP Australasia, and an energy advisor to former British Prime Minister Margaret Thatcher. I’ve spent the decades since fighting for action on climate change, because the evidence left no other honest choice.
Right now, the Australian Senate is examining whether gas corporations should pay a fairer share of tax on the gas they export overseas. It’s potentially one of the most consequential climate and cost-of-living decisions the Government will make this year.
Yesterday, I appeared before the Senate Select Committee on the Taxation of Gas Resources on behalf of the Climate Council and our community.
And I told them the facts plainly: Australians are getting a raw deal on our own gas.
The industry is fighting tooth and nail to maintain the status quo. Preventing a fair tax on new gas projects only protects a polluting, dying industry from its own decline.
Read our submission: Senate Select Committee on the Taxation of Gas Resources
Here’s what I told the Senate:
Gas is a polluting fossil fuel, and the damage comes home: Wherever Australian gas is burned, the pollution drives the worsening heatwaves, floods and fires we’re all paying for. Ensuring the industry pays a fair share of tax is a step towards making it pay for the harm it causes.
Australians are paying the price for exporting most of our gas: We export five times more gas than we use, leaving households here exposed to every global price shock. And Australia only keeps 30% of what corporations earn selling our fossil fuels when most other countries keep 75% or more.(1)
It’s a giveaway.
If this fuel crisis has taught us anything, it’s that our reliance on fossil fuels is risky, costly and exposes us to energy insecurity: The reality is that gas is already on the way out – Australian gas demand has fallen every year since 2020,(2) and Treasury expects production to drop 67% by 2050. Other countries like Norway and Malaysia have also been taxing gas at higher rates for years, and this hasn’t deterred investment there.
More tax revenue could build lasting benefits for Aussies: One model shows a gas exports tax could raise $17 billion a year – enough to make two million rented homes more energy efficient, and collectively save families around $5 billion a year on their power bills. This would be genuine climate and cost-of-living action that delivers lasting energy security, paid for by the corporations profiting from resources that belong to us.
You can read the full submission I took into the Senate inquiry here.(3)
We’re part of a chorus of credible voices publicly backing a fairer tax, which is exactly why the gas industry lobbyists are working in overdrive to squash it.
Prominent stakeholders and business leaders have all signalled their support for a gas exports tax, including former Treasury Secretary Ken Henry,(4) the Australian Council of Trade Unions,(5) and Commonwealth Bank CEO Matt Comyn.(6) Labor MP Ed Husic said he and several Labor MPs support it,(7) and Liberal MP Andrew Hastie said he was open to it.(8)
So, what’s next? Here’s how you can help:
A decision is coming: The Committee reports on 7 May. The Federal Budget lands on 12 May. The Government has asked Treasury to model a gas exports tax and senior ministers have pointedly refused to rule it out. The industry knows this, which is why lobbying against the tax is already in full swing.
Over the next few weeks: The Climate Council will keep making the case – in the media,(9) in briefings, and directly to decision-makers – that a gas exports tax is fair, workable, and long overdue.
Join the conversation: Forward this email to someone who is still unsure about the merits of taxing gas exporters. After spending four decades in the industry, I know their arguments don’t hold up. Share information from someone who used to be on the inside.
Thank you for making this work possible.
I was able to speak to the Senate this week – with a submission shaped by the Climate Council’s research and advocacy team, delivered on behalf of a community that has backed this organisation for more than a decade – because of people like you.
With gratitude and determination,
Greg Bourne
Climate Councillor
Former President, BP Australasia
Former CEO, WWF Australia
P.S. If you want the full picture of what I took to the Senate, the Climate Council’s submission is linked here.
References:
- The Case for Pricing Pollution – The Superpower Institute
- Slump in eastern Australia gas demand shows no signs of easing – IEEFA
- Submission: Select Committee on the Taxation of Gas Resources – Climate Council
- Ignore ‘self-serving’ claims from gas giants and implement 100% tax on windfall profits, Ken Henry says – The Guardian
- Windfall profits to oil and gas multinationals should benefit working Australians – Australian Council of Trade Unions
- Time to consider a gas tax to fund business incentives: Comyn – AFR
- Gas tax inquiry begins – ABC
- Andrew Hastie open to 25% tax on gas profits and says multinationals have ‘had a really good run’ on Australian wealth – The Guardian
- Climate Council in the media on the gas exports tax:
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TRANSCRIPT
of The Sustainable Hour no. 587
Jane Goodall: (00:00)
Every single one of us matters. Every single one of us has some role to play.
António Guterres, United Nations Secretary-General:
We are all in this together.
Jingle:
The Sustainable Hour. For a green, clean, sustainable Geelong: The Sustainable Hour.
Tony Gleeson: (00:32)
Welcome to the special Earth Day episode of The Sustainable Hour. We’d like to acknowledge that we’re on the land of the Wadawurrung people. We pay tribute to their elders – past, present, and those that earn that great honour in the future. As befitting on that Earth Day, which emphasises something that was very, very common for them: their care for country and care for community. We have a great appreciation for the acquired ancient wisdom that they have, something that they acquired over millennia until their land was stolen. And it’s important if we wanted to survive the climate crisis, to have that set of values guiding us.
Christine Couzens: (01:47)
Today is Earth Day, a day that reminds us not only of the beauty of our planet but of our shared responsibility to protect it, starting where we live. This year’s Earth Day theme is ‘Our Power Our Planet’. It is a powerful reminder that protecting the environment is not something that happens somewhere else. It happens in our homes, in our workplaces and in communities like Geelong.
Here, we are incredibly fortunate. We live, work and play alongside our beautiful north-facing bay, Barwon River and Great Ocean Road. We have access to national parks and our much-loved yuyangs, as well as wetlands, farmland and open spaces that support both wildlife and livelihoods. These landscapes shape who we are as a region, providing clean water, fresh air, food, recreation and a strong sense of belonging.
And when I think about these beautiful natural assets that I have enjoyed as a child and as an adult, I want to ensure that others get to enjoy that natural beauty and for generations to come. We are also lucky to be part of a region that produces world-class food and wine made possible by healthy land, clean water and a favourable climate. From the Bellarine Peninsula with its farms and wineries to the Great Ocean Road and Geelong’s north-facing waterfront.
These places are not only economic assets, they are central to our identity. Preserving these areas is vital if they are to continue supporting our community and future generations. We are also fortunate that this land has been cared for over 10,000 years by the Wurundjeri people. We acknowledge that we have much to learn from First Peoples. When it comes to caring for and protecting country, we must embrace deep listening, but we still have a long way to go.
Earth Day began on the 22nd of April 1970, when communities came together in their millions to demand action on pollution and environmental damage. What started as a grassroots movement led to lasting change and has since grown into global event, now celebrated by more than a billion people each year. The message then, as it is now, was simple. When people stand together, change is possible.
But we also know these environments are under pressure from climate change, pollution, waste and the loss of habitat. We see it when our rivers run low, when coastal erosion threatens our foreshores or when extreme weather impacts our communities and water security is high on our agenda. And that is why Earth Day matters. ‘Our power our planet’ reminds us that solutions are not only global, they are local.
Power sits with communities who choose to care for waterways, reduce waste, support renewable energy, protect biodiversity and speak up for the environment that we will leave for future generations. Across Geelong we already see this power in action through community cleanups, sustainability groups, conservation efforts, local libraries, schools, volunteers and organisations working every day to protect what we value most.
I’ve enjoyed many conversations with school students about climate change. These kids are the change makers of our future. Each day is not about perfection. It is about commitment. It is about recognising that every action, no matter how small, adds up when we work together. Protecting our planet and environment locally to ensure that Geelong remains a healthy, vibrant place to live for our children and for generations to come. This is a commitment. We can all work towards it.
Mik: (06:15)
Thank you, Christine Couzens, our Member for Geelong in the Victorian Parliament.
Something is beginning to shift. With the help of AI, artificial intelligence, the researchers, the scientists, are uncovering structures in whale communication that we simply were not able to perceive before. And it’s not just the clicks and the calls, it’s the patterns, the rhythms, the dialects even, and the different sounds that are hidden in these codas of the whales.
And when researchers speed up the recordings and remove the silences, suddenly these clicks and calls resolve into a stable spectral shape, which is the whale’s equivalent to vowels. So machine learning is beginning to map out like sentences, identifying markers and emotional tones, clan-specific variations and so on, and independent teams across the world are beginning to find the same thing.
Whale communication is far more complex and structured and culturally transmitted than we ever imagined. We can’t yet translate exactly what the whales are saying to each other. We can’t sit beside the whales and begin to understand their conversations. Not yet. It may actually come.
The point is that we’re beginning to recognise something which is quite mind-blowing and maybe even unsettling, which is that this is actually a language. Once we have discovered that language, once we have understood the language of the whales, it’s going to challenge one of the deepest assumptions that we humans carry around about ourselves, which is that our communication and meaningful conversation and so on belongs only to us humans.
I don’t think we even need to fully decode what the whales are saying to each other. What we already know now is that they matter. That they live in complex social groups, that they form long-term bonds, they learn from one another, they pass on behavior and they stay connected across time. We’ve seen in the whales what looks like grief, we’ve seen them cooperate and we’ve seen something that actually resembles culture.
And I think that’s really, really important when it comes to a day like today, Earth Day. Because Earth Day is so much about how we relate to the non-human life on planet Earth. These beings all belong to Earth. And the story that we humans tell about ourselves needs to change. And it even needs to change into the way we rule the world, our laws. Many of the rules that govern our societies were written in a time when we did not understand the world as we do now. The laws think that the oceans are empty and now we are finding the oceans are not empty. There’s living beings who are communicating, who have culture in the oceans.
If we look at, you know, the different animal types that they’re out there, the dolphins, of course, are known for that they have their whistles, they use them as calling each other names even. But so do the flying foxes. We’ve heard that in the sustainable hour in the recent months here that the flying foxes actually have names for their babies and they are distinct. They recognise one baby from another by its name.
And everyone who owns a dog know that dogs read our human emotions and they understand us, but we don’t always understand them. Horses communicate. Even pigs, who we don’t normally recognise as even as ‘animals’, in a way – they’re just food, aren’t they? They communicate joy and stress and they have also complex vocal patterns.
So I think if Earth Day means anything, it is that our laws, like our stories, need to evolve now. Our understanding needs to evolve and responsibility for all life on planet Earth is something that we need to build into our structures that shape our worlds. This huge circle of beings on planet Earth matter.
So I would say to Earth, and to all the life on Earth, including us humans, but also the whales – and our friends and family – I would say: Happy Earth Day! We are together, and let’s live from that understanding. Let’s live in that.
Having said that, it’s time even today for the global outlook and for the news from around the world. we have standing here today, Colin Mockett OAM ready with the news. Colin, let’s hear what you have for us today!
Colin Mockett’s Global Outlook: (11:38)
Well, thank you, Mik, and my roundup this week begins in Santa Marta, Colombia, where after Earth Day from April the 24th to the 29th, Colombia and the Netherlands are co-hosting the first conference on transitioning away from fossil fuels. That’s a meeting, it’s an event that’s stated purpose is to build a coalition of actionable science-based plans that will phase out fossil fuels, address the gaps in traditional UN climate talks.
That’s their words, putting it in plain language. They’re saying that the COP meetings don’t work, therefore they’re setting up an alternative one which will.
In their words again, the initiative follows a lack of a firm phase out agreement at COP 30 and that led Colombia and the Netherlands to spark talks amongst willing nations away from the fossil industry’s lobbyists. There are roughly 46 nations already signed up including Brazil, Canada, Germany, Norway, France, Spain, Vanuatu, Palau, Tuvalu and Australia.
That’s a nice thing. We’re actually going to this meeting. The conference is seen as a critical step in building a framework of similar world treaties for eliminating other dangerous materials aimed directly at the root cause of the climate crisis, which is fossil fuels. Santa Marta is a coal exporting port and the first conference being cited there is no accident.
It’s seen as being the crucial first step towards a formal fossil fuel treaty negotiations. The talk’s primary outcome is clear. It must acknowledge the need for negotiation of a new international treaty that would regulate fossil fuels and kickstart a process for willing countries to tackle fossil fuels together.
Achieving this milestone will build a momentum for a second international conference and that’s slated to be hosted by Tuvalu in the Pacific within a year, where a formal mandate to negotiate a fossil fuel treaty is already on the agenda. So this is a way of sort of sidestepping and bypassing the failed COP lot of talks and it’s, I couldn’t give it more publicity, it’s wonderful in my book.
If we can manage to do that and get it out of the hands of the fossil fuel multinationals, so much the better. But now to Paris with the International Energy Agency’s release of its 2025 Global EV Outlook Report. The report’s conclusion was that the world’s EV revolution is shifting. It’s shifting from light to heavy vehicles and doing so at an astonishing pace.
It recorded an 80 per cent increase in electric truck sales globally in 2024, the last full year of figures. There’s been an almost six-fold increase in the number of available models. Now, now more than 400 available electric prime mover models, six-fold since 2020. More recent data published by CV World is even more startling.
Total registrations of what it’s called new energy vehicles was up 182 per cent year on year in China in 2025. That’s more than 45,000 heavy duty electric trucks that were registered. That’s 54 per cent of total registrations. And that was just in the month of December 2025.
Most importantly for Australia, the IEA data completely rubbished our parliament’s conservative opposition’s constant claims that EV trucks can’t work in Australia because their capacity is less and their range is too low. They prove without doubt that it is possible to move cattle or steel or toilet paper or anything else around Australia on giant semi-trailers with an electric prime mover at the front and they’ll do it quicker and more efficiently than diesel. It’s already happening in much of the rest of the world and now belatedly it’s happening here.
Advances in batteries and charging infrastructure are catalysts. The new heavy-duty electric trucks can travel fully loaded for four to five hundred kilometres on a single charge, and that makes them suitable for most regional Australian freight routes and long-distance corridors. Add to this the new generation of megawatt charging infrastructure, which makes it possible for an electric semi to charge from 20 per cent to 80 per cent in less than 30 minutes. So while you’re at a truck stop, they can charge up while they’re having a hamburger and chips.
The one trialled in Australia is a Chinese made B-double rated Windrose prime mover. Over the past six months, New South Wales company of New Energy Transport has used its Windrose truck in a series of trials, including the one that was reported in the media. Then the truck completed a 480 kilometre round trip from Picton, south of Sydney to Barrisfield in the Hunter region on a single charge with a load of chicken feed. Now this was no speciality arranged trip. It was run a normal run and the truck met all relevant laws and regulations. But what it did do was impress both the driver and the truck company about the relative merits of electric versus diesel. What particularly impressed the driver was its power.
Windrose produces 1,400 horsepower compared with 500 to 700 from a typical diesel, which enables it to maintain its speed even up steep hills. The driver said he couldn’t repeat exactly what the other truck drivers said over their two-way radios when I was flying past them up Mount White, he said. The gist of it was, he said, they were very explicit deleted impressed.
And because the Windrose was able to sit at the speed limit the whole way, the trip was completed 40 minutes faster than it would have been under diesel power. Moreover, the fuel cost was a fraction of the diesel alternative. And Daniel Bleakley, who is co-founder and co-chief executive of New Energy Transport, said “…we used 600 kilowatt hours at 15 cents wholesale renewable energy price. So it cost us about $50 up and back for a 36-tonne combination. That trip normally costs around $300 worth of diesel, and that’s at old pre-Iran War prices. So you can have another 30 per cent on that.”
He said that a delivery from Sydney to Canberra with a load of toilet paper from Who Gives a Crap cost 84 per cent less than the equivalent diesel run, based on current prices.
In another trial covering one of the steepest major trucking routes in the country, he said this particular truck, the Windrose, hoarded 68 tonnes of steel from Blue Scope Steelworks in Port Canberra up to Mount Owsie, passing diesel trucks like they weren’t even moving.
It was able to hold the speed limit all the way into Sydney and back again. It could run two of those loops on one charge. He said the big difference was that the changeover was a matter of capital costs versus operating cost. The existing diesel road freight industry is very low capital expenditure, but high operating expenditure, he said.
So you might buy a new truck for $250,000. You then run it up and down the Hume Highway doing 200,000 kilometres a year, and you’ll spend about $2 million on diesel over 10 years. Electric trucking is the opposite. It’s high capital, but low operating expenses. The trucks are more expensive up front. The windrows cost $450,000. That’s not quite double the cost of a diesel. And you have to pay for charging infrastructure. But the benefits on the operating side are so huge that the overall cost over 20 years, we believe, is now much, much lower than diesel.
And to keep the good news coming, Forest Green Rovers beat Braintree Town 3-1 at the weekend, leaving them in sixth place on the ladder, and that completes my roundup for the week.
Jingle: (21:14)
Listen to our Sustainable Hour – for the future.
Leo Renkin: (21:37)
Earth Day is a very significant day, particularly where we are at the moment. I mean in geopolitical and all the things that are going on in the world. And I think it’s sad that we’ve got to the stage where we have to wait for all these things to happen before we say, why don’t we get an electric car now? Take them 20 years before we realise we should get an electric car or we should get solar panels or we should try …
Colin: (21:58)
Are we recording this?
Leo: (22:04)
and maintain the world without having such a reliance on oil, but it’s taken us to this stage and we’ve had warnings for way over 20 years and now people are starting to realise, well if you don’t do something about it, it’s going to get you in the end anyway. So that’s a thing that’s had to have happened, so hopefully people can take a lesson from this and learn that if we don’t look after the planet, we won’t have a planet anymore.
Mik: (22:28)
Leo Renkin, the Pulse station manager through more than a decade.
Colin: (22:34)
So our next guest today is John Shone, who will be talking today on ‘earth marks’, which we all will all get because we’ve all got our hands in the Earth today later on. But John will explain exactly what he means by that. But I’d like to open, if I can, John, by asking you: what does Earth Day mean to you?
John Shone (22:59)
Thank you, Colin, and the audience out there in radio land. Earth Day is very special to me. It reminds me of my maternal grandfather who when I was an eight-year-old boy he invited me to sit with him on the banks of the Glenelg River at Bell Morrill in Western Victoria and he taught me how to be still with nature. He taught me how to catch a fish. It took me eight hours to catch that first fish and he suggested to me, in fact he instructed me, to let it go. He said you can eat the second one but not the first.
And so Earth Day for me is about remembering Grandfather Bloomfield on the banks of the Glenelg River, where the family, my great-grandparents, ran a market garden for the village.
And it also reminds me of the market garden and the urban farm that my father’s grandfather, my great-grandfather, established in West Footscray and how government told us as a family in 19 to close down the urban farm, having been told after the gold rush when the family arrived in Footscray that they should grow their own food.
So Earth Day to me is A) how is the Earth to be respected, A) to be connected with, A) to be part of – and now I’ll go on to B – and B) to restore and C) to derive nutrition from.
That’s my long version of a short answer column to Earth Day.
Colin: (25:00)
Well look, that’s excellent, John, but can you tell me what was the purpose of not eating the first fish you catch, but only eating the second?
John: (25:11)
My grandfather, when I got over the sadness of not eating the first, explained to me that that fish was not big enough. And so he taught me about when was a fish ready to be eaten and how might I prepare it. But more importantly, he reminded me that I was dependent upon that fish. And so that first loss of my first fish caught made me remember that I have to put some effort and some thinking into how big is the fish and how much do I need to eat.
Colin: (25:51)
I like that. So I’m presuming that if you’d have caught the big one first, he would have taught you how to share?
John: (25:59)
He would have. And you’ve led me to talk about what I have done in a prior Earth Day of a five kilo salmon, which I shared with, I thought 12 people were going to eat that salmon. And it was with the Chinese Consul General for Victoria. And he came to open the exhibition of some Chinese banners that had been prepared in 1865 by people in China saying thank you to the people of Beechworth for not massacring Chinese people on the Beechworth gold fields. And there’s a ritual with sharing a fish with a Chinese dignitary is that each of the guests must have a smaller fish. Well, too many guests came and I had to quickly find smaller fish and I had to beg permission from the Chinese Consul General that I could share his fish with the uninvited guests. And he said yes.
Colin: (27:04)
That’s almost biblical. You didn’t have any bread as well, did you?
John (27:11)
From the Beechworth bakery, we did.
Colin: (27:16)
Now listen, tell us about earth marks.
John (27:20)
Well, I’m going to speak in to the audience, Colin, so bear with me. This might take three minutes to answer. And I’m inviting everyone out there in radio land to find somewhere quiet, or noisy, but certainly next to something that is very natural, something which you might connect with Earth Day. And I’d like you to be very reflective, as I’d be reflective because my dear friend Mik asked me a few days ago to reflect on what Earth Day means.
Well, what it means for me, in short – but probably for about three minutes of talking – is my ‘earth mark’. My footsteps in village each day known so that others might navigate their own earth mark, each seeking harmony with nature and humans, all marked as Earth. You know, I am trademarking my Earthmark.
Remember your first walk to your mother’s arms, in your childhood garden, to early learning and schools thereafter, to work each day and at times lost, to teenage and adult hides, on those adventures remembered, at rituals, during obligations required, heartfelt.
So how might you picture nature then and now? That’s starting to help you think about what your earth mark is. And you might like to trademark it.
And I’ll mention more of that later. Where is your furrow on this earth today? At what do your feet feel? Your hands rub, your nose smell, your ears hear, your lips purse?
Your mouth taste and your skin and hair sense in ecosystems depleted. Less nurturing today.
What might our parallel minds remember of Earth experienced in past times, urging which stories for us to tell others of Earth Day today?
Imagine, imagine, imagine if all that you take from this Earth each day is sequestered in a village earth garden with trees co-named as us, in soils cultivated by villagers all co-owned by nature and us. I say it again, all co-owned by nature as us, quite different to freehold as that which we know.
But now, if you are co-named and co-owned by nature as us, co-operating in village as nature restored, perhaps that is Earth Day every day.
Imagine yourself as 700 mature trees on 7,000 square metres of village forest as your earth print. Your earth print. Not your family’s, not your neighbours. Your earthprint. That’s the freehold that you have as part of the mutual ownership of the forest. Imagine again 700 trees as you.
Reflecting upon Earth Day 2026, Colin, I’m caused to ponder my experiences in many places, but of some places in particular lived and toiled, learned from forever, and I’ll just dot point them for myself.
And as I’m speaking to you all out there, you might like to think of the places that are traumatic for you, joyful for you, harmonious for you.
So here’s my list.
Food security at Urban Farm, Summer Hill Road, West Footscray. Taken from us by government. Asked to be put there by us, by government, childhood play amidst industrial pollution on Stoney Creek Tottenham, Victoria. An automotive factory, a carpet factory, a caterpillar factory, an air force base, a polluted creek, where boyhood to manhood was a test for me as an eight-year-old boy.
Being at one with nature on Glenelg River, Balmoral, I spoke of that earlier, catching the fish, letting it go, learning how to be comfortable with that, becoming aware of what sharing means. As opposed to witnessing desertification of the Murray-Darling Basin following colonial settlement, massacres of Aboriginal people, grandfather that day on the Glenelg River when I was eight told me that I should always, when seeing an Aboriginal person as the words were used then, I should look at that person and say sorry. This was 1958, not the sorry ceremony in Canberra many years later. And grandfather told me that our family, his grandfather, my great grandfather, murdered Aboriginal people when they landed with the Hentie brothers at Portland. That was not a good Earth Day for anyone.
And I remember that, each Earth Day as well. In fact, I remember it every day. Coal extraction and industrial collapse in the Hunter Valley. That was my experience in working on the closure of the Newcastle Steelworks. Learning pollution was sanctioned. Pollution is subsidised. Pollution is permitted. Odd that that should be the case. Criminal that that should be the case.
I’ve spent most of my life turning schmuck into schmick with displaced tradies, now guild artisans. That all happened in a time when industrial peace was broken by corporations, mainly global, who wanted to break the backs of the unions, ask the people to become contractors, ask the worker to be vulnerable, ask the family to be without security.
Not the lucky country that I was born into in 1950. I do have joys of our national capital, foraging edible landscapes for food daily for one year in 2002.
How did I do that? I was blessed with having received a copy of Marion Marnie Griffin’s Canberra Food Garden Handbook and the joy of that handbook being co-read by Ngunnawal elders, each of us realising that the knowledge of the food on the nature strip was actually planted there at Marion’s instruction based on her knowledge of the natural foods that grow in the streetscapes of 32 countries, placed on an unceded land as a national capital.
But I was able to eat Irish wild strawberries, Japanese plums, by simply reading Marion’s book as I strolled each day, just after dawn, around Old Canberra. Then, that experience causes me to reflect on collaborating with small holder artisan food makers on the Campaspi and Coluban rivers, not the Glenelg, but in the Macedon ranges, Dale Swet and Harcourt Valley. And then again, in recent times, treading polluted foreshore at St. Leonard’s on the Bellarine, having to check what colour the water is and will it give me an infected ear.
Will it cause me to get gastro? As I look to the east, I see the Corio Bay. I see the refinery. I noticed that it’s a northeasterly. Better not swim today. Too brown. Too nasty. Sore ear. A bit different to walking on UNESCO World Heritage Ice Age landscape on Scherlund’s old Denmark. With a 10th generation farming family impacted by PFAS that they’ve identified as having come on Pacific and Atlantic waters with the Gulf Stream assistance from Chile.
PFAS in Denmark from Chile puts a new spin on global trade. There’s always joy where there’s horror. Immersed in ancient farmed forests in Australia, Austria and Finland reminds me that I need to 700 trees, mature ones. Well, what’s that going to cost me? Eh, somewhere between $100 and $500 each. How will I do that? Well, superannuation, I suppose.
Time to spend what I should have been spending long ago. I’m 76. Should have been spending that from when I first started getting a wage. Probably when I first started getting pocket money. So remember, think about what is your earth mark.
What is your earth mark in your village? Remember what I said at the beginning of this, my footsteps on Earth each day known so that others might navigate their own trademark, Earthmark, each seeking harmony with nature and humans, all marked as Earth.
I’ll remind you again, my Earthmark is being trademarked.
Yes, yes, I say! Yes, you as an Australian can trademark your village Earthmark. But it’s difficult, the name, if the name is purely descriptive or geographical, as it must distinguish your specific service from others’ service. It must be your Earthmark. It must be ‘John Shone Earthmark’.
To succeed, the generally needs to be stylised, a unique logo. I think we’re all unique. Facial recognition proves that, doesn’t it? My goodness, who owns that? It’s important that you own your Earthmark or have acquired distinctiveness through long-time use by being known. Thank you for being known on Earth Day.
Tony: (39:22)
Our next guest is at great expense to the management is Robert Patterson. And Robert, come up and spout your words of wisdom.
Robert Patterson: (39:34)
Thanks, Tony and Colin and Mik. My name is Robert, and I’ve come along today to Earth Day here again and it encases an enormous amount of cross-section of the community.
What I’m interested in is that shelter is a human right and unfortunately our community in Geelong and across much of the country, if not all the country, is lacking homes, especially for people that are not able to find accommodation. But there is some good news, and the good news today is number of Geelong people are promoting and now building a tiny house in Port Arlington.
And this tiny house is all but finished. The plaster is there today. The decking was put together yesterday by some of our local community and the aim is to build a number of these tiny houses in Geelong, and this is why we’ve come along this morning to The Pulse and to join The Sustainable Hour, and yeah, so what we’re needing is accommodation for people that are struggling for accommodation.
There’s lots of people that are on couches and in cars and I think that if we could build two or three hundred these tiny homes in Geelong and there’s plenty of blocks of land that are 600 square metres so that gives great opportunity to put two of these in the backyard of a block of land that may be owned by the council or a church or the government. But what we need is you, the people of Geelong, we need the council, we need state and federal government to assist us in Geelong with this project. I think that’s what I’ve got to say on it, Colin, at this stage and wish everybody the best for Earth Day.
Colin: (41:41)
thank you Rob. Just a quick definition. What’s the difference between a tiny house and a granny flat if you’re going to put it in your garden?
Robert: (41:50)
That’s a good question, Colin. A granny flat is well known. The thing was with a granny flat in previous years, and this is going back, I understand, you know, 20 years that you could put a granny flat in the back of your block of land. However, when granny passed on, then the tiny house had to be removed. So now the council and the Victorian state government have rethought the whole process and now the classified as secondary dwellings and once they’re established for granny then after granny no longer needs it it can be rented out to the public or to a family friend or whatever.
Colin: (42:35)
Well, look, we’re now at the stage where the Baby Boom generation are in their 60s, 70s and 80s. And at that time, they’re widowed or they’re coupled with no commitments, very few commitments, and they don’t need the space of a big house. They’re looking to downsize and they’re looking a simple life still in the community. They don’t really want to go into one of the gated communities. And it strikes me that tiny houses are the ultimate solution. The best solution for the aging baby boomer generation.
Robert: (43:20)
Yeah, that’s very true, Colin. What’s interesting is that we have had interest with people that were going to build a tiny home in their backyard and because they don’t want to move, they own the property and they want to downsize. So with a tiny home in their backyard, they have still got the enjoyment of their garden, their local friends, they can still walk to the shops. They’re not having to move a distance or way to downsize and then they can let their house out, is what the plan is, to two other people at a reasonable rate of perhaps half what you’d have to pay to rent a house or perhaps hand it over to the children and grandchildren.
Colin: (44:10)
Well, that’s very true,
Tony:
Robert, one thing I mentioned, and probably most people want to know the cost of this, seems there’s so many advantages, but just looking at the cost alone, what are we up for?
Robert: (44:26)
Thanks, Tony, that’s the important question and this is where we’re hoping we can get a bit of interest from our politicians. But yeah, a tiny home at this stage is costing around that $100,000 and a lot of that is unfortunately the planning permit, the engineering, the energy rating, the soil testing, etc. etc. And it also depends on the engineering, how deep the footings are needed to be. So it should come in around that orbit under that sort of figure.
Mik:
When it comes to the environment here in Geelong region, we have one, I think, very powerful and significant voice. I don’t know if you follow him already. I certainly do. On Instagram, he posts videos where he’s giving insightful talks. And we are lucky today to have a special Earth Day tribute from Mitch Pope.
Mitch Pope: (45:29)
Today is Earth Day, so I just wanted to take a moment to acknowledge and reflect on the part of the Earth which has given me more in this life than I could ever give back and that is the ocean. I’ve been extremely privileged to have grown up in an area where the ocean is right on my doorstep. So naturally I’ve developed a deep sense of connection to the ocean and the marine environment and some of my best and happiest memories have come from being in the ocean. So I wanted to reflect on some of them. Some of these memories include surfing in the evenings with the closest people around me, watching the sunset from in the water, floating freely along a wave where life feels simple and joyful.
The countless morning and afternoon swims in the ocean to get the day started or to reconnect with the earth and myself. Getting in for a body surf and becoming completely weightless, taken by the energy of a wave. Photographing my friends in the surf, sunset, being underwater, totally immersed in what is a completely different world to the one that we live in. Spending time noticing the life that you think should exist on a completely different planet to the one that we live on. Sitting and staring out of the horizon of the ocean where things feel difficult and a little more possible.
The moments that I’ve been frustrated, low, upset, bothered, annoyed, lost, not feeling myself. But the ocean has always brought me back to myself and absorbed any of the negative energy running through my body. The encounters with the residents and the custodians of the marine world, dolphins, gannets, seals, rays, turtles, whales, fish, and the time spent in the shores of the rock pools searching for life clinging to the rocks.
The countless different forms of a single ocean that presents itself, calm, choppy, blue, pink, grey, energetic, motionless, powerful. The ocean has given me many of the memories that I cherish today and has helped me shape who I am today. But it’s also given us all of the life in our bodies. 80 per cent of the Earth’s surface is water. Half of the air we breathe comes from the ocean. The ocean has absorbed our harms and pollution for decades without showing too much pain. But things are different now. Things are changing.
Our mother ocean isn’t hiding the pain anymore. Coral reefs are bleaching, kelp forests are being lost, ecosystems are overheating. We’re part of the ocean once sang with life. They now sit silent for decades.
We treated our ocean and the rest of the natural world as infinite and disposable, not showing much of the care for the harm our activities are causing to the rest of life on Earth. Pileaged, disrupted, blasted, and done more harm to the ocean than we can be forgiven for. We have to do what we can to right our wrongs, even if we weren’t the ones who caused it. I wanted to put a call out to everyone listening.
I want you to think about what the earth has given to you, how it has impacted you and your life and been there for you and carried you through this life. And I want you to consider what you might do to help make a positive impact for the natural world, because the ocean and the rest of living world is currently on life support.
Right now is our only chance to turn things around and we have to be the ones to do it. Fortunately, we are making some gains. They are slow gains, but they are gains. Cuts to carbon pollution, expansion of marine parks, restoration of coral reefs and kelp forests. But these things just aren’t happening as fast as they need to be. So I want to call on all of us to do what we can for the health of the ocean and the living world. Thanks for watching.
Jingle
. . .
Mik: (49:38)
Thank you everyone for coming today and celebrating with us, marking Earth Day. The day continues and there’s activities out in the community and so on. Go to our website www.climatesafety.info and you’ll find a calendar there where you can see some of the events that are happening. We’ve reached the B section of The Sustainable Hour on an Earth Day. And Colin, Tony, what should we be today?
Colin: (50:07)
We should be aware of Earth Day and be aware of the way of living. Make it simple.
Tony:
Be earthy. That’s very much like the First Nation people. That’s what guided every decision they made, was how would it affect their people in the future and their land, I guess, and their community as a whole. So, yeah, that’s something we’ve got away from in so-called modern existence, but there’s so many people that are dissatisfied with the way the world is functioning at the moment. There’s not a whole lot of people that appreciate it. A lot of unhappiness, and that gets all turned around if we change our focus rather on exploitation, consumerism, and turn it to do no harm. I think that’s what Earth Day’s all about.
Mik: (51:03)
And I would say ‘Be together’, you know, and be responsible – to all life on planet Earth.
Colin: (51:10)
I think I like that last bit, Be responsible. It’s Earth Day, be responsible!
Sir David Attenborough: (51:18)
It might seem like an obvious thing to say, but we need to keep saying it. Our planet is precious. The climate stability of the past 12,000 years has come to an end. And around the world we are now suffering from the impact. At the same time, nature is declining at rates unprecedented in human history, with as many as a million species facing it.
Fortunately, we’re now better informed about the state of the world than ever before in the planet’s history. And those with knowledge and the ability to innovate can provide solutions to a great number of problems. There are huge opportunities to getting things right. The only way to operate is to believe we can do something about it. And I truly think we can.
. . .
SONG
‘We are not alone’
[Clicks and calls by humpback and sperm whales]
We are not alone on planet Earth
We are not alone on planet Earth
Verse 1:
We thought that we were all alone
the only voice upon this Earth
but something moves beneath the waves
a new understanding comes to birth
clicks form patterns we now can read
rhythms turning into signs
stories travel across the oceans
careless humans come to understand
their new position in the circle of life
Chorus:
We are not alone on planet Earth
We were never alone after all
Life is speaking everywhere
Voices join to make the call:
Be aware and be together
Make your ‘I’ become a ‘we’
Be responsible for life
Be the change we need to be
Verse 2:
Every step we take on Earth
leaves a mark for those to come
Paths are forming as we walk
becoming what we will become
Bridge:
What’s your earthmark on this Earth?
Where do all your earthmarks go?
What will you build and leave behind
for the child you’ll never know?
Chorus:
You are not alone in choosing life
You are part of everything
Circle as wide as ocean breath
Every voice a living thing
Be aware and be together
Make your ‘I’ become a ‘we’
Be responsible for life
Be the change we need to be
Be the change we need to be
What’s your earthmark on this Earth?
. . .
. . . . . . . . . . . . . . . . . . . . . . . .
CALENDARS
Events we have talked about in The Sustainable Hour
Events in Victoria
The following is a collation of Victorian climate change events, activities, seminars, exhibitions, meetings and protests. Most are free, many ask for RSVP (which lets the organising group know how many to expect), some ask for donations to cover expenses, and a few require registration and fees. This calendar is provided as a free service by volunteers of the Victorian Climate Action Network. Information is as accurate as possible, but changes may occur.
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