Cleaning Up: Leadership in an Age of Climate Change28 Tammi

The State of the Climate 2026 | Ep242: Zeke Hausfather

How do we model the climate system? How warm will 2026 be? And can geoengineering be anything more than a bandaid?

This week on Cleaning Up, Bryony Worthington sits down with leading climate scientist Dr. Zeke Hausfather on the day the 2025 global temperature data is released. Despite a La Niña year, the planet has just experienced one of its hottest years on record — pushing us ever closer to the 1.5°C threshold.

Zeke explains why recent warming has accelerated, how declining air pollution may be unmasking hidden heating, and what disappearing cloud cover could mean for climate sensitivity.

The conversation ranges from the surprising accuracy of early climate models, the risks of rising nationalism, and what the U.S. withdrawal from international science means for the world.

They also tackle controversial questions: Are worst-case climate scenarios still plausible? Is geoengineering a dangerous distraction — or an emergency brake? And can carbon removals ever work economically at scale.

Leadership Circle:

Cleaning Up is supported by the Leadership Circle, and its founding members: Actis, Alcazar Energy, Davidson Kempner, EcoPragma Capital, EDP, Eurelectric, the Gilardini Foundation, KKR, National Grid, Octopus Energy, Quadrature Climate Foundation, SDCL and Wärtsilä. For more information on the Leadership Circle, please visit https://www.cleaningup.live.

Discover more:

Zeke’s articles in the New York Times: https://www.nytimes.com/by/zeke-hausfather
Zeke on LinkedIn: https://www.linkedin.com/in/zeke-hausfather-7327699/
Zeke’s Blog on Substack: https://www.theclimatebrink.com/p/my-2026-and-2027-global-temperature

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The Race Is On To Control AI | Episode 274: Afonso Salema & Sam Winter-Levy

More than 80% of the world’s advanced AI compute is concentrated in the US and China. For Europe and other middle powers, the question may no longer be how to win the AI race, but how to avoid becomin...

16 Syys 1h 5min

Mexico Wants To Build An $8,000 EV For Everyone | Ep273: Roberto Capuano

Can Mexico build an electric car for $8,000, and use it to create an entirely new domestic industry? This week on Cleaning Up, Bryony Worthington visits Mexico City to sit down with Roberto Capuano, d...

9 Syys 57min

The Testbed for Asia's Clean-Tech Future | Ep272: Jaime Z. Urquijo

Can the Philippines become a testbed for Southeast Asia’s clean-tech future? Kicking off Season 19 of Cleaning Up, guest host Marie Cheong meets Jaime Z. Urquijo, Urban Estates Group Head at Ayala La...

2 Syys 1h 4min

The Good, Bad and Downright Ugly of Australia's Energy Transition | Deep Dive Australia 09: Anna Freeman & Michael Liebreich

Australia has become a laboratory for the energy transition, what can the rest of the world learn? After two weeks travelling across Australia and meeting the leaders shaping its energy transition, Mi...

26 Elo 1h 3min

The Next Frontier of Electrification? Industrial Heat | Ep271: James Macnaghten

Around the world, factories making food, drink, pharmaceuticals and other everyday products rely on steam, often produced by fossil-fuel boilers. James Macnaghten, founder and CEO of Caldera, is betti...

19 Elo 39min

How Much Better Can Solar Get? Deep Dive Australia 08: Martin Green

Solar was once dismissed as a marginal technology. Today, it is transforming the global energy system, and few people have done more to make that possible than Professor Martin Green. Innovations deve...

17 Elo 52min

AI Has An Electricity Problem | Ep270: Arshad Mansoor

Will AI break the grid? As hyperscalers race to build ever-larger data centres, electricity demand is soaring. The question is no longer whether power demand will grow, but by how much, how quickly, a...

12 Elo 1h 8min

How Renewables Are Replacing Australia's Ageing Coal Fleet | Deep Dive Australia 07: Paul Simshauser

Australia has one of the world's fastest-moving electricity systems. It leads the world in rooftop solar, has deployed grid-scale batteries at extraordinary speed, and is now starting to replace its a...

10 Elo 48min