Johan Rockström

Johan Rockström

Author: RNZ June 2, 2026 Duration: 32:13

The climate catastrophe once dismissed as science fiction. Leading climate scientist, Johan Rockström, on the tipping points that would plunge Europe into an ice age while catapulting the southern hemisphere into an endless heatwave.

Watch the full episode here

Could climate change trigger an ice age in Europe? On this episode of 30, world-leading climate scientist Johan Rockström explains the growing fears around the collapse of the AMOC, the Atlantic ocean circulation system, that helps regulate the planet’s climate.

Rockström warns the world has now breached seven of nine planetary boundaries, and says we are approaching dangerous tipping points that could reshape life on Earth.

30 with Guyon Espiner: long-form conversations with the world’s leading thinkers, scientists and changemakers.

Go to this episode on rnz.co.nz for more details


In a media landscape often crowded with quick takes and fragmented attention, 30 with Guyon Espiner offers a deliberate alternative. Each episode is built around a single, extended conversation between veteran journalist Guyon Espiner and one person shaping the world we live in. The focus here is on depth, not breadth, allowing for a nuanced exploration of a guest's ideas, experiences, and motivations. As a production from RNZ, this podcast carries a commitment to substantive journalism, presenting these dialogues without editorial cuts or interruptions. What you hear is the full, unfolding discussion-the thoughtful pauses, the challenging questions, and the moments of genuine insight that can only emerge from a sustained, thirty-minute exchange. The guests are drawn from across spheres of influence, including politics, academia, culture, and activism, providing listeners with a direct line to perspectives that inform public life and private conviction. Tuning in means setting aside the noise for a half-hour of focused listening, where the format itself-one guest, no edits-becomes a statement of intent. It’s for anyone who believes that understanding complex figures and issues requires more than a soundbite, preferring instead the texture and authenticity of a complete, unrehearsed conversation.
Author: Language: English Episodes: 43

30 with Guyon Espiner
Podcast Episodes
Peter Zeihan [not-audio_url] [/not-audio_url]

Duration: 31:54
Geopolitics expert Peter Zeihan tells Guyon what New Zealand needs to do right now if it wants to survive the end of globalisation, why China's days are numbered, and who's going to win the US election.Watch the video ve…
Mea Motu [not-audio_url] [/not-audio_url]

Duration: 31:09
Champion boxer Mea Motu gets real about what motivates her in the ring, how her kids saved her life, and why she won’t stay silent on domestic abuse.*Content warning: Contains discussions of domestic violence and suicide…
Tuku Morgan [not-audio_url] [/not-audio_url]

Duration: 31:50
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Mike King [not-audio_url] [/not-audio_url]

Duration: 31:21
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Jordan Williams [not-audio_url] [/not-audio_url]

Duration: 31:18
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Stephen Cave [not-audio_url] [/not-audio_url]

Duration: 31:05
Longevity expert Stephen Cave explains to Guyon how living to 150 years old could soon be a reality, and why the consequences of immortality would be horrific for all aspects of our world.Watch the video version of the e…
James Shaw [not-audio_url] [/not-audio_url]

Duration: 31:46
Former Greens Co-Leader James Shaw on why the party should consider working with National in future, why he's been called a "tree Tory", and what he's got planned after politics.Watch the video version of the episode her…
David Seymour [not-audio_url] [/not-audio_url]

Duration: 31:39
ACT leader David Seymour tells Guyon how it feels being part of the coalition Government, what race-based policies he'd like to change, and whether we can really afford tax cuts.Watch the video version of the episode her…
Roseanne Liang [not-audio_url] [/not-audio_url]

Duration: 31:40
Film director Roseanne Liang tells Guyon about her huge new Hollywood project, why she's obsessed with Terminator 2, and what movies tell us about humanity.Watch the video version of the episode hereRoseanne Liang is a N…
Dave Letele [not-audio_url] [/not-audio_url]

Duration: 32:17
Community leader and former boxer Dave Letele tells Guyon his thoughts on the new Government's crackdown on gangs, whether bootcamps really work, and if he'll ever get into the political ring himself.Content warning: Con…