This week, hosts Tom Rivett Carnac and Paul Dickenson delve into the rapidly emerging - and faintly surreal - world of solar geoengineering.

Politico journalist Karl Mathiesen joins us to unpack his investigation into Stardust, a VC-backed startup claiming it’s ready to spray particles into the stratosphere. Karl explains why this technology is suddenly attracting serious money, why scientists still have major questions about safety and side effects, and how in some places, the global regulatory landscape is almost nonexistent.

And from technological disruption to political stability, former New Zealand Prime Minister Jacinda Ardern, reflects on the leadership we need. She’s unflinchingly honest about why so many politicians still choose “fear and blame” over long-term action, and why climate remains New Zealand’s “nuclear-free moment.” A test of political character as much as policy. Her argument is hopeful: people, she insists, are ahead of their politics.

As we march towards the end of 2025, these conversations map the terrain of 2026: technologies racing ahead, governance lagging behind, and a public increasingly hungry for leaders willing to act with integrity. If you want to understand where the climate fight is really heading this episode is essential.

Learn more:

📚Read The Strange and Totally Real Plan to Blot Out the Sun and Reverse Global Warming

👂Listen to our episode with Ricken Patel

🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipe

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Producer: Ben Weaver-Hincks

Planning: Caitlin Hanrahan

Exec Producer: Ellie Clifford

This is a Persephonica production for Global Optimism and is part of the Acast Creator Network.

Hosted on Acast. See acast.com/privacy for more information.

This week on Outrage + Optimism, we’re taking a breath.

After two intense weeks of daily updates from COP30 in Belém, we’re returning to weekly programming with something different - a slower, deeper, more reflective conversation that felt too valuable to cut.

While in the Blue Zone, we sat down with Kim Stanley Robinson, the acclaimed author of The Ministry for the Future, 2312, The Mars trilogy, and the Science in the Capital series. His writing has been read by negotiators, ministers, campaigners, and many of you.

In our conversation, Kim Stanley Robinson reflects on why The Ministry for the Future begins with such a devastating opening chapter, a “punch in the gut” designed to reveal the human limits of adaptation. He introduces the idea of “pre-traumatic syndrome,” the unsettling clarity that comes from imagining a catastrophe before it happens, and how this can motivate us rather than paralyse us. We explore storytelling as a cultural tool for moving from despair to determination, and why each of us needs a a unifying purpose that gives shape to our actions in a chaotic world.

At a COP defined by urgency, exhaustion, and flashes of courage, this wide-ranging conversation with Kim Stanley Robinson felt like a necessary exhale, a moment to step back and reflect on why we do this work, and what kind of future we’re choosing to build.

We’re airing the conversation almost exactly as it happened.

🎤 Leave us your voice notes and questions for upcoming episodes on SpeakPipe

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Series Producer: Ben Weaver-Hincks

Planning Producer: Caitlin Hanrahan

Edited by: Miles Martignoni

Exec Producer: Ellie Clifford

This is a Persephonica production for Global Optimism and is part of the Acast Creator Network.

Hosted on Acast. See acast.com/privacy for more information.

This is our final episode of Inside COP. For two weeks we’ve tried to bring you as close as possible to the heart of COP30 - the pace, the pressure, the progress, and the perspectives of those working inside and around the process.

The closing plenary on Saturday began amid unexpected tension. Already running a day behind schedule, the Presidency moved to adopt the final text, but proceedings were paused following questions over whether all interventions had been properly registered. What followed were hours of clarification, consultation and procedural back-and-forth, underscoring concerns among many developing countries who had negotiated through the night to secure their priorities.

In this episode, Christiana Figueres, Tom Rivett-Carnac and Paul Dickinson examine how the final day unfolded, what was agreed, and what it might mean.

But this COP was never just about negotiation. Beyond the formal process, we explore what COP30 revealed about wider trends: shifting clean-energy economics, accelerating deployment across regions, and emerging signs of how the decline of fossil fuels is beginning to influence global decision-making.

🎤 What do you want to hear on Outrage + Optimism? Ask us on SpeakPipe or on our socials where you can also see more behind the scenes moments and to watch our videos:

Instagram @outrageoptimism

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Lead Producer: Ben Weaver-Hincks

Planning Producer: Caitlin Hanrahan

Edited by: Miles Martignoni

Exec Producer: Ellie Clifford

With thanks to Groundswell and Global Optimism.

This is a Persephonica production for Global Optimism and is part of the Acast Creator Network.

Hosted on Acast. See acast.com/privacy for more information.