These are the CASSE blog articles on pollution.


Peruvian Gold: Producers, Consumers, Lands, and Livelihoods

by Alix Underwood

When I say “gold mining,” what comes to mind? Perhaps you think of the 19th-century gold rush, with prospectors in suspenders swinging pickaxes and panning for gold in rivers. Maybe you envision industrialized mining, with terraced pits and heavy machinery. A visit to the Peruvian Amazon, where gold mining has surged in recent decades, transformed my perception of gold mining and miners.

I have the privilege of advising a team of Notre Dame master’s students—diverse in origins and expertise—as they work alongside a Peruvian NGO,


Will DC Break Free of Its Methane-Gas—and Economic-Growth—Shackles?

by Alix Underwood

How do we stop climate change? One decommissioned fossil-fuel pipe at a time, via hard-fought local battles to change energy infrastructure and decrease energy consumption. Who do we fight these battles against? Profit-hungry corporations that monopolize energy markets and back-pocket politicians that help them guard the fossil façade.

In the U.S. capital, the climate-change rubber hits the road as activists pressure an obscure and unelected decision-making body,


Challenging Land Use and Abuse in Allamakee County

by Dave Rollo

Allamakee County lies in the northeast corner of Iowa, bordering Minnesota and Wisconsin. It is part of a three-state region that, unlike most of the upper United States and Canada, escaped glaciation during past ice ages. This geological oddity is immediately obvious to visitors by the dramatic terrain of bluffs, hills, and valleys. Expansive plains characterize most of the rest of Iowa, where miles-thick glaciers moved over the land like a bulldozer,


Maybe We Should Be the Ones Grokking: Thoughts on Elon Musk’s xAI Super-Polluting Supercomputer

by Helene Langlamet

Is it just our filter bubbles? Or is an understanding of the environmental impact of artificial intelligence (AI) slowly making its way into the mainstream? Recently, a spate of news stories have highlighted the hefty environmental footprint of AI. Take for instance this recent article by the Washington Post on the hidden water footprint of using AI chatbots. Or this article by The Guardian on how the greenhouse gas emissions of data centers may be almost eight times higher than large technology companies like Google or Microsoft will acknowledge.


The Olympic Spirit: Friendly Competition or Unsustainable Growth?

by Mark Cramer

Every four years, the Summer Olympics present a rare opportunity for friendly competition and collaboration among nations. The public has an opportunity to witness a myriad of sports that otherwise never make the headlines. Talented athletes get a rare chance to display their skills before an international audience.

The Olympics offer a venue for peaceful, international solidarity. Yet they also present a seemingly insurmountable ecological challenge. To begin with,


The Fracking Free-Market Fallacy

by Helene Langlamet

In 2007, the Marcellus Shale Play was opened for production in Pennsylvania. The fracking of the shale unlocked massive fossil fuel reserves previously considered inaccessible. But it also unleashed an especially expensive and wasteful extraction process that involved flushing hundreds of millions of tons of highly toxic chemicals a mile deep into the ground and into the water table. And it brought up natural gas contaminated with unprecedented levels of radioactivity.


A Trophic Perspective on Fossil Fuels

by Alix Underwood

Like the economy of nature, the human economy has a “trophic” structure. In nature, nutrition and energy flow from plants to herbivores to carnivores, with each of these comprising a trophic level of the ecosystem. In the human economy, materials and energy flow from agriculture and other extractive activities to heavy manufacturing to light manufacturing. Both economies include service providers, such as pollinators in nature and the transportation sector in the human economy.


Okeechobee County: Kept Great with Conservation

by Dave Rollo

Okeechobee County is located in Florida’s Heartland Region, within the 3000-square mile Kissimmee River Basin. The Heartland stretches from Orlando in the north to the intertidal coast of mangrove forests to the south, forming an area commonly referred to as the “River of Grass.” Water flowed hundreds of miles through this enormous network of marshlands, helping to shape an ecosystem of unrivalled subtropical biodiversity.

Today,


Tompkins County, the Finger Lakes Hub of Sustainability

by Dave Rollo

The Finger Lakes region of western New York State is distinguished by a series of long and narrow glacial valleys, dammed by moraine, that now contain lakes. Glacial scouring created some of the deepest lakes in North America, including Seneca, Cayuga, and Skaneateles lakes. These spectacular natural features give the region its identity.

The region features ample farmland and forest and a relatively sparse population. Tompkins County,


How to Take out a Pipeline

Gregory M. Mikkelson

The speed of economic growth hinges to a large extent on the supply of fossil fuel, especially of oil and gas, which depends in turn on pipeline capacity. Thus, if we are to turn the tide against economic growth, pipelines are a good strategic place to start. In what follows I focus on the fight against one pipeline in particular.

Spiderwebs of pipelines hold six continents in thrall to climate-wrecking,