Ecosystems

The Ten Most Important U.S. Environmental Laws

An image of the U.S. Capitol Building in the evening.

Some of the choices may surprise you.

What are America’s most important environmental laws? Some are familiar, such as the federal air and water pollution laws, and the Endangered Species Act. But there are other people rarely hear about — even in environmental law courses — but have done a lot to protect the environment.

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The “Silver Bullet” Required to Improve California’s Water Rights System: More & Better Data

California Lags Behind Other Western States in Obtaining Critically-Needed & Available Water Diversion Data

Recently I’ve posted stories about efforts to enforce California’s water laws in the face of efforts by some diverters to evade and ignore limits on their ability to privatize public water resources–especially in times of critical drought.  One post focused on the federal government’s successful criminal prosecution of a San Joaquin Valley water district manager …

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Universities Gear Up to Fight Climate Change

Here are some recent developments at leading universities.

Universities across the country are making moves to better address climate change: creating new Schools of Sustainability and Climate, establishing research institutes, and appointing Vice Provosts for Climate Change to oversee their work.

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NEPA in the Ninth

Can an agency just shortcut the whole process? The 9th Circuit says no.

On Wednesday, the Ninth Circuit decided a NEPA case that discusses two interesting issues. But what’s most striking isn’t what the court did discuss but what it didn’t mention : the fact that last year’s NEPA amendments  speaks directly to one of those issues. Apparently the word that NEPA was extensively amended a year ago …

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Deciphering NEPA 2.0

Here’s everything you wanted to know about the “New NEPA” but were afraid to ask.

NEPA was long an island of legal stability, standing almost unamended for over a half century.  Then in the summer of 2023, everything changed.  As a rider on the agreement to raise the debt ceiling, Congress extensively rewrote and expanded NEPA, gifting us with a new statutory regime.  As I’ve written before — and discuss …

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Misusing Carbon Removal as a Climate Response

Carbon removal is an alluring idea. That also makes it a tempting façade for bad policies.

It seems clear that in some form, carbon removal is going to be an important component of climate policy, especially later in the century to deal with carbon levels that overshoot the targets in the Paris Climate Agreement. The problem is not with the concept but with its misuse.    One of the risks that …

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The Long Life and Sudden Demise of Federal Wetlands Protection

Here’s a timeline of events.

It’s no wonder that one EPA staffer’s reaction to the Supreme Court ruling was a single word: “Heartbroken.” In 2023, the Supreme Court ended fifty years of broad federal protection to wetlands in Sackett v. United States.  It is only when you look back at the history of federal wetland regulation that you realize just …

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Emmett Institute Symposium: Powering the Future

This is a critical moment in the energy transition for plotting the course of mineral extraction, with communities and the environment in mind.

  If you ever find yourself passing through southwest Montana, go visit the Berkeley Pit and contemplate resource extraction. You pay a couple bucks to a guy in a trailer; walk under some razor wire and through a long, disorienting white tunnel; then stand and stare out at the most beautiful turquoise sea of toxic …

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Evaluating Voluntary Agreements in the Bay-Delta Watershed

Satellite image of California, centered on the Bay-Delta watershed. The Central Valley shows up prominently, with green agricultural fields rimmed by drier brown land, surrounded by mountains.

by Nell Green Nylen, Felicia Marcus, Dave Owen, and Michael Kiparsky

Updates to flow and other regulatory requirements for California’s Bay-Delta watershed are long overdue.  For much of the last 12 years, state political leadership has prioritized efforts to develop voluntary agreements (VAs) with water users over completing updates to the watershed’s water quality standards.  Now the State Water Resources Control Board has restarted the regulatory …

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Pearl Harbor Today

82 years after the attack, what is the state of the harbor?

Today is Pearl Harbor Day, the anniversary of the Japanese attack that launched the U.S. into World War II.  Those of us who don’t live in Hawaii may not think much about the harbor, but I started to wonder how things were going environmentally there. The geography is more complex than I had expected. I …

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