These are the CASSE blog articles on sustainability.


Two Cheers for Circularity

by Gary Gardner

Here’s some bad news for folks who see a circular economy as a way out of the polycrisis: Trends in global materials use, which recently bent modestly in the direction of circular flows, are flattening once again. The Circle Economy Foundation in Amsterdam reported in January that secondary materials amounted to only 7.2 percent of all materials in the global economy in 2023, down from 9.1 percent in 2018.


Redesigning Business for Sustainability

by Daniel Wortel-London

Can businesses become sustainable? Certainly—at least in theory. In recent years, new business models have emerged that attempt to place business on an ecologically healthy footing. The doughnut economy, the regenerative economy, sufficiency enterprises, and postgrowth and degrowth businesses: These and other experiments represent ways of doing business that not only create customer and firm value, but address social and environmental needs as well. 


Time to Make a Material Difference

by Gary Gardner

Well, COP 28 ended yesterday with (seeming) agreement to (sort of) walk down the fossil fuel ladder toward a (not for a while) sustainable future. Geez! It’s almost 2024, more than half a century since Limits to Growth was published, and the human family is in a pouting mood. Why is it like pulling teeth to do the right thing, sustainability-wise? Why are we sleepwalking toward a cliff?


Which Future?

by Gary Gardner

One of the more puzzling features of modern life is the starkly contrasting visions of humanity’s near-term future. Watch thirty minutes of commercial-filled TV and you get a cheery sense that all is well in the world. A BMW, an anti-depressant, or a Caribbean vacation—these will ensure ever greater happiness.

At the same time, a 2021 poll in ten countries found that four in ten young people are hesitant to have children because of the climate crisis.


Who Tallies the Resources?

by Daniel Wortel-London

The economy of the USA, like that of any other nation, depends on natural resources—minerals, timber, fossil fuels, land, and a host of other renewable and nonrenewable assets. It couldn’t function without these resources any more than you or I could survive without air. So you’d think that determining whether our country’s demand for natural resources exceeds the environment’s supply would be of the greatest importance to politicians.


Selling the Steady State Economy

by Gary Gardner

The looks I get are familiar at this point: the blank stare screaming What do you mean, a no-growth economy? The frown of doubt that silently demands, Are you crazy? This is how skepticism about degrowth and steady-state economics manifests in my own life.

The work of a steady-state proponent is not for the faint of heart, to be sure. Steady state economies are sorely needed today but are far from being widely understood,


Happiness Matters, Even in a Steady State Economy! Part 1: Sustainable Hedonism

by Orsolya Lelkes

From a historical perspective, we should be living in the happiest of all worlds. Ours is a culture ostensibly centered around happiness: The mainstream neoclassical economic system aims to maximize pleasure (utility) for all, and is based on the assumption that we humans seek the greatest pleasure and the least pain, and that this quest is the main driver of our actions.

Happiness has also been a philosophical,


Fusion Energy: A Different Take

by Gary Gardner

The recent news that scientists moved a step closer to fusion energy was greeted with enthusiasm and awe in much of the media, a bright spot of cheer amid the ongoing drumbeat of existential global threats. Only the most cynical of curmudgeons could pooh-pooh this hopeful development—right?

After all, energy is the foundation of human development. Civilizational advance is a tale of ongoing successes in shaping energy for human ends.


Ending Planned Obsolescence: A Nonpartisan Movement for Steady Staters to Support

by Rosalie Bull

“Planned obsolescence” has become a household term for 21st century Americans. No wonder, considering that most household appliances today have been designed in accordance with the practice. Now more than ever, things just aren’t made like they used to be. In fact, they’re made to fail—often within a fraction of their potential lifespans—in order to spur more consumption.

What have we here

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A Primer on Economic Growth and Biodiversity Conservation for COP15

by Brian Czech

With COP15 coming up, it’s time to don the old conservation biologist hat and proffer a primer on the relationship between economic growth and biodiversity conservation. The last thing we want is a COP15 devoid of discussion about the fundamental conflict between growing the economy and conserving biodiversity. In fact, the 800-pound gorilla—GDP growth—ought to be front and center.

For the uninitiated, COP15 is the UN Biodiversity Conference,