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This Earth Day, environmental advocates are looking backward as well as forward. With the U.S. federal government so dramatically overhauling environmental policy, history shows how American social movements of the 19th and 20th centuries overcame seemingly insurmountable odds to preserve public lands and pass laws protecting human health. “I’ve been trying to look through the history of the United States to understand how we’ve gotten where we are,” said Alejandro Camacho, a Professor of Law at UCLA School of Law and co-author of Lessons for a Warming Planet: A Vital History of U.S. Environmental Law, which comes out on Earth Day, April 22, 2026. “Prior generations did meet the moment and at least partially addressed some of the major problems that were in front of them.” Camacho discusses the book in this lightly edited transcript.

A fan of place-based education, every year I haul my students to Louisiana’s Maurepas Wildlife Management Area to paddle the swamps and learn about coastal law. This semester, I had ten students with me, each paddling a kayak on the swamp’s shimmering water. Bits of salvinia, a free-floating aquatic fern, eased downstream at an almost imperceptible rate. Stories on the bayou are always changing. This year, the narrative wrestled with a choice the state is making about what the Maurepas Swamp will become — an ecological jewel or a carbon-capture dump. The community is torn.

In the past five years, the United States began experiencing a rapid increase in electricity demand, fueled primarily by data centers for artificial intelligence. A single data center can use the amount of electricity consumed by a city of approximately 80,000 people. Most data center companies seek electricity from the same utilities that provide electricity to retail and commercial customers (including all of us). And these utilities are building massive amounts of transmission and generation to meet data centers’ growing demands.

I was writing in a New Orleans coffee house last spring when another customer noticed the ocean stickers on my laptop and offered me a new one in support of a regional cause: the Rice’s whale, a species that had only recently been identified and is listed as endangered under the Endangered Species Act (ESA). That’s because only about 50 of these creatures exist. And they all live full-time in the Gulf of Mexico. I’ve seen many species of whales, but never this one. I’m told they have very distinct vocalization patterns and a unique diving pattern. Unlike many whales that feed near the surface, Rice's whales make deep dives toward the seafloor during the day to feed on fish and spend their nights sleeping within 50 feet of the surface. The Trump administration apparently wants them gone.

Data centers are increasingly making headlines for the serious problems they create for the communities where they are proposed and built, as well as for the resistance from people who live there, who refuse to accept the rising energy bills, noise and air pollution, and strains on water infrastructure that inevitably accompany these new neighbors. On Tuesday, February 10, I moderated a webinar, “From Community to Congress: Advocating on AI Data Centers,” that broke down the (de)regulatory landscape of data centers.

To the extent that people think about the U.S. Environmental Protection Agency (EPA) at all, they likely think of an institution that works to safeguard our health and well-being, and that of our environment. So, The New York Times made quite a splash recently when it reported that the agency had adopted a new policy under which it would stop considering the health benefits of two of the most harmful and pervasive air pollutants: fine particulate matter and ozone.

The world’s ecosystems have been subject to an increasingly dangerous cocktail of stressors from land and ocean over-development, invasive species, and pollution. But rather than stem the tide of these harms, the Trump administration has resurrected several regulatory changes to the Endangered Species Act designed to stifle species’ protections and provide land developers even more power to destroy invaluable ecosystems.

In 2025, President Donald Trump rolled out new initiatives at a dizzying rate. That story, in one form or another, dominated the news. This year, much of the news will again be about Trump, but he will have less control of the narrative. Legal and political responses to Trump will play a greater role, as will economic developments. Trump’s anti-environmental crusade may run into strong headwinds.

As projections of U.S. electricity demand rise sharply, President Donald Trump is looking to coal – historically a dominant force in the U.S. energy economy – as a key part of the solution. In an April 2025 executive order, for instance, Trump used emergency powers to direct the Department of Energy to order the owners of coal-fired power plants that were slated to be shut down to keep the plants running. But there remain limits to the president’s power to slow the declining use of coal in the U.S.