Bad Idea #49 "We can stop worrying about the climate" with Zeke Hausfather

“We can stop worrying about the climate.”

In this episode of Saving the World from Bad Ideas, Mark Lynas speaks with climate scientist Zeke Hausfather about a dangerously complacent idea: we can stop worrying about the climate. As recent years have broken temperature records and warming appears to be accelerating, they explore why that conclusion is badly mistaken.

The conversation unpacks the hidden role of aerosols in masking warming, what recent spikes in temperature do and do not mean, whether net zero really stops further warming, and how seriously we should take tipping points, geoengineering, and carbon removal. The result is a clear-eyed discussion that pushes back against both panic and complacency, and argues for staying focused on the scale and complexity of the climate challenge.

🧠 Topics Discussed

🌡️ Why the rate of global warming appears to be increasing

☁️ How aerosols have masked part of the warming caused by greenhouse gases

🚢 Why shipping pollution controls became part of the climate conversation

🧮 What happens if sulfur dioxide emissions fall even further

♻️ Why reaching net zero means temperatures likely stabilise rather than keep rising

📈 What explains the exceptional warmth of 2023 and 2024

🌍 Whether the world has actually passed 1.5°C yet

🔥 Why climate complacency is just as misleading as climate fatalism

🧊 How to think clearly about tipping points, from permafrost to ice sheets

🌊 What we know, and do not know, about AMOC slowdown and Arctic feedbacks

🛠️ Why solar radiation management remains controversial, risky, and unresolved

💨 Why geoengineering cannot replace emissions cuts

🪨 Which carbon removal pathways seem most promising today

💸 Why carbon removal is likely to matter, even if it stays expensive

⚡ Why solving climate change will require many tools rather than one master fix

👩‍🏫 Guest Bio

Zeke Hausfather is a climate scientist and climate research lead at Stripe. He writes for Carbon Brief, publishes the The Climate Brink Substack, and has served as a lead author for the IPCC. His work focuses on observed warming, climate model performance, carbon removal, and the intersection of climate science and policy.

📚 Recommended Reading & Resources

The Climate Brink by Zeke Hausfather

Zeke Hausfather’s work for Carbon Brief

IPCC reports on 1.5°C, mitigation, and carbon removal

Frontier and Stripe’s work on carbon dioxide removal

Research on aerosols, shipping emissions, and recent warming trends

Research on solar radiation management and carbon removal technologies

💬 Quote Highlights

💬 “Our best estimate removing sort of natural variability is that the current rate of warming due to human activity is somewhere in the order of 0.27C.”

— Zeke Hausfather

💬 “If you were to get rid of sulfur dioxide emissions completely... you would end up at about two degrees of warming rather than the 1.5 or 1.4 we’re at today.”

— Zeke Hausfather

💬 “Getting to net zero emissions of all greenhouse gases and aerosols would lead to roughly flat temperatures.”

— Zeke Hausfather

💬 “All of these geoengineering approaches we’re talking about... are literally that.”

— Zeke Hausfather

💬 “There’s no silver bullet, but there’s silver buckshot when it comes to climate change.”

— Zeke Hausfather

🌐 About WePlanet

WePlanet is an international movement campaigning for science-based solutions to the climate, nature and development crises. Through conversations like this one, we challenge bad ideas, test assumptions, and make the case for a more abundant, resilient and hopeful future.

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