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Topic: Warming

[Episode #74] – Climate Science Part 10: How to limit warming to 1.5°C without CCS

In this tenth part of our series on climate science, we explore a new paper outlining a climate scenario that would limit warming to 1.5 °C without relying on negative emission technologies. It does so by detailing numerous pathways that could lead the world toward much lower total primary energy consumption, including a heavy focus on the demand side, quantifying the impact of behavioral changes and different ways of providing energy services, rather than simply focusing on consuming energy.

This doesn’t mean that actually following the pathways outlined in this model will be easy, or that staying under 1.5 degrees of warming is going to happen automatically. In fact, some of the behavioral changes that would be needed might be as difficult as implementing a carbon tax (or, for that matter, implementing CCS at scale). But this outlook does respond to our main complaints with the existing body of climate and energy scenarios—that they generally depend on negative emissions technologies like CCS, and that they don’t adequately take into account measures and policies that are already reducing our energy demand and accelerating the energy transition. Our guest in this episode is one of the co-authors of the paper: Charlie Wilson, a researcher at the Tyndall Centre for Climate Change Research, and an Associate Professor in Energy & Climate Change at the University of East Anglia in the UK. His expertise on consumer adoption of technology, behavior and policy as they relate to energy and climate change mitigation gives him a unique perspective on this research that we think you’ll find illuminating and thought-provoking.

Geek rating: 5


[Episode #61] – Climate Science Part 8 – Melting Glaciers and Sea Level Rise

In this eighth part of our mini-series on climate science, we tackle the subject of ice and melting, and how much sea-level rise it may produce. What if that viral story about a starving polar bear may not even have been accurate? What does it really mean when we say that a worst-case climate model projects 11 feet of sea level rise, and is that even a plausible scenario? What does it mean to say that sea ice is melting at the fastest rate in 1,500 years? How much sea level rise might actually result from ice shelves breaking off? And how can we relate the latest studies on melting glaciers and ice caps to degrees of global warming or meters of sea level rise? These aren’t easy questions to answer, but our guest in this episode has about as good a shot at answering them as anyone. His nuanced and deeply informed view of what’s happening to our glaciers and ice caps in this 90-minute interview is refreshing, thoughtful, and provocative, and offers an educational counterpoint to the usual simple projections of climate doom.

Geek rating: 4


[Episode #57] – Climate Science Part 7 – Carbon Budget

In this seventh episode of our mini-series on climate change, we explore what carbon budgets really mean, and what they indicate about the pathways that might allow us to keep global warming below two degrees C.

Amid all the unavoidable uncertainty in modeling warming and the effects of our actions, what do we really know about how much warming we might see in the future? If it turned out that our carbon budget is larger than we used to think it was, would that change our policy direction? And which policy paths should we advocate?

Our guest in this episode, Dr. Glen Peters, is a veteran researcher on climate change whose current research focuses on the causes of recent changes in carbon dioxide emission trends at the global and country level, and how these changes link to future emission pathways consistent with global climate objectives. And after listening to this nearly two-hour conversation, as well as our previous six episodes on climate science, you will have a much better idea of how much warming we may yet expect!

Geek rating: 8