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The 56th Earth Day may also be the bleakest. Wave upon wave is crashing upon our system of ecological protections. But having spent years studying the full sweep of American environmental legal history, we can say with confidence: the bigger the wave, the stronger the undercurrent.

On April 18, The New York Times dropped a bombshell with a story that offered a unique window into the political inner world of the U.S. Supreme Court. Based on a series of leaked memos, the story retraces the events leading up to the Court’s extraordinary decision to halt the enforcement of the Obama administration’s Clean Power Plan, a rule to limit greenhouse gas emissions from the power sector, even while the case was still pending in the D.C. Circuit Court of Appeals.

Maryland’s 2026 legislative session represented a challenging playing field for advancing climate and environmental legislation, marked heavily by the dual considerations of budget shortfalls — driven by the federal government’s abandonment of funding critical programs and sowing chaos among the numerous federal workers who live in Maryland — and uncertainty as to long-term energy reliability and affordability placing a pall on energy planning in the state.

In early April, The Washington Post published an op-ed trashing state and local efforts to hold Big Oil and Gas accountable under the law for the lies they told about their products’ connections to climate change and damages they inflict on people and the planet. I submitted a letter to the editor presenting counterpoints to the op-ed’s claims, which included the absurd notion that insulating some of the biggest companies on earth from even a small measure of justice is somehow a vital “national security” interest. The Post chose not to run that letter, so I’m sharing it with readers here.

Two congressional hearings this week will put President Donald Trump’s budget proposal under the microscope, but the real story should be the administration official sent to defend it: Russell Vought. His rare appearance before Congress will give committee members a unique opportunity to confront the administration on the full range of its anti-constitutional, illegal, and otherwise harmful actions — provided they seize it.

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.

In 2025, North Carolina saw an effective repeal of its carbon plan, and the state is now on track to approve over 100 data center projects. This will further imperil the state’s 2050 decarbonization goal while creating a new slew of environmental and public health concerns and electricity affordability problems. The state is charting a harmful path and should change course before its policies hurt more people and communities.

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.