Great simplification pulsing lines

Ep 18  |  Thomas Murphy

Thomas Murphy: “Physics and Planetary Ambitions”

Check out this podcast

TGS18 Thomas Murphy The Great Simplification

On this episode, we meet with Professor of Physics at UCSD and the Associate Director of CASS, the Center for Astrophysics and Space Sciences, Tom Murphy.

Murphy shows us how continued growth and energy use is an impossibility if continued at our current trajectory. How does physics constrain our planetary ambitions? Murphy helps us do the math.

To help us align with a post-growth trajectory, Murphy offers suggestions for how humans can begin to treat nature as well as we treat ourselves — and why we must care about the future in order to create a brighter one.

About Tom Murphy

Tom Murphy is a Professor in the Physics Department at UCSD, the Associate Director of CASS, the Center for Astrophysics and Space Sciences, and is the author of Energy and Human Ambitions on a Finite Planet.

From 2003–2020, Murphy led the APOLLO project as an ultra-precise test of General Relativity using the technique of lunar laser ranging. Professor Murphy’s interests are transitioning to quantitative assessment of the challenges associated with long-term human success on a finite planet.

In French, we have a motto that says that a simple drawing is often better than a long explanation. Jean-Marc Jancovici Carbone 4 President

That’s very understandable because with left atmosphere thinking, one of the problems is that you see everything as a series of problems that must have solutions. Iain McGilchrist Neuroscientist and Philosopher

We can’t have hundreds and hundreds of real relationships that are healthy because that requires time and effort and full attention and awareness of being in real relationship and conversation with the other human. Nate Hagens Director of ISEOF

This is the crux of the whole problem. Individual parts of nature are more valuable than the biocomplexity of nature. Thomas Crowther Founder Restor

Show Notes & Links to Learn More

Download transcript
Back to episodes
Moral AmbitionWith Rutger BregmanThe Great SimplificationEp 195 | Rutger Bregman

The overarching definition of success today often looks like the accumulation of stuff – money, cars, property, clothing – anything that signals wealth. This means that success is also synonymous with overshoot, extraction, and consumption – none of which lead to healthy outcomes for the planet or the global good. But what might be possible if we were to redefine success to prioritize collective well-being instead of personal gain?

Watch nowOct 1, 2025
The Past and Future of Societal CollapseWith Luke KempThe Great SimplificationEp 194 | Luke Kemp

It’s widely known that Earth’s forests provide home to countless numbers of species, act as a vast sink for carbon, and provide much of the food, materials, and clean water on which our societies rely. But emerging science shows us that forests may play another critical role: making rain. This theory, called the biotic pump theory, hypothesizes that instead of being passive recipients of rain, forests may actively create the conditions for precipitation over land – a premise that turns modern meteorology on its head.

Watch nowSep 24, 2025
Why We Need ForestsWith Anastassia MakarievaThe Great SimplificationEp 193 | Anastassia Makarieva

It’s widely known that Earth’s forests provide home to countless numbers of species, act as a vast sink for carbon, and provide much of the food, materials, and clean water on which our societies rely. But emerging science shows us that forests may play another critical role: making rain. This theory, called the biotic pump theory, hypothesizes that instead of being passive recipients of rain, forests may actively create the conditions for precipitation over land – a premise that turns modern meteorology on its head.

Watch nowSep 10, 2025

Subscribe to our Substack

Please enable JavaScript in your browser to complete this form.

The Institute for the Study of Energy and Our Future (ISEOF) is a 501(c)(3) non-profit corporation, founded in 2008, that conducts research and educates the public about energy issues and their impact on society.

Support our work
Get in touch
x