When Washington Abandons Climate Science, Pasadena Must Lead

With a single, monumental decision last Thursday, the Trump administration eliminated its own legal authority to fight climate change. This is not political hyperbole. It is the dismantling of the scientific and legal foundation that has allowed the United States to protect public health, clean air, and a stable climate for nearly two decades.

As meticulously reported by The New York Times journalist Lisa Friedman on The Daily this week, the administration repealed the 2009 “endangerment finding,” the determination that greenhouse gases like carbon dioxide and methane endanger human health and welfare. That finding flowed directly from a landmark Supreme Court ruling, Massachusetts v. EPA (2007), which affirmed that climate pollution is, in fact, pollution and therefore subject to regulation under the Clean Air Act.

Eliminating the endangerment finding means the federal government voluntarily surrenders its authority to regulate greenhouse gas emissions, vehicle standards, power plant limits, and methane leak controls. All fall, not because the science has changed, but because political ideology has overruled evidence.

This Is Not a Scientific Debate

The Trump administration claims the science was “too pessimistic.” In reality, the science has only grown more conclusive. Climate impacts are unfolding faster and more violently than predicted in 2009: more extreme heat waves, longer fire seasons, deeper droughts, worsening air quality, and rising seas.

The reason outcomes have not been even worse is precisely that governments and communities took action, imperfectly, but meaningfully.

But to now point to that partial success as proof that the threat was exaggerated is not just dishonest; it is dangerous. It ignores the overwhelming scientific consensus that every additional ton of carbon pollution worsens the harm, particularly for children, seniors, and those with respiratory and cardiovascular disease.

Even more alarming is the administration’s tone. This rollback is being celebrated as a victory, as if dismantling protections for human health, ecosystems, and future generations were a cause for pride.

EPA Administrator Lee Zeldin has reportedly described his goal as driving “a dagger through the heart” of climate regulation. That rhetoric is not accidental. It signals contempt not only for science, but for the millions of Americans who care deeply about clean air, livable cities, and the future of life itself.

What This Means for Los Angeles and Pasadena

Here in the Los Angeles region, the consequences are not abstract. Pasadena and the greater Los Angeles region have already paid a steep price for climate-fueled wildfires — in lives lost and disrupted, months of toxic air, school closures, evacuations, lost homes, and billions of dollars in firefighting costs, health impacts, and property damage borne by families, insurers, and taxpayers alike.

We already live with some of the worst air quality in the nation. Weakening federal standards means more smog-forming pollution, more asthma attacks, more missed school days, and more emergency room visits.

Climate change is also intensifying extreme heat and supercharging wildfire risk. Hotter temperatures, prolonged drought, and drier vegetation have turned Southern California into a year‑round fire zone. When fires burn, the damage does not stop at the fire line. Smoke blankets entire regions, driving dangerous spikes in particulate pollution that lodge deep in our lungs and bloodstreams.

For Pasadena/Altadena residents, wildfire smoke has become a recurring public health emergency. Schools close, outdoor activity becomes unsafe, and vulnerable populations, children, seniors, and outdoor workers, face heightened risk of heart and respiratory illness.

Rolling back climate protections guarantees more extreme fire behavior, longer fire seasons, and more days when simply breathing the air is hazardous — all the while simultaneously driving up insurance premiums, shrinking coverage, and putting homeownership and housing stability at risk across fire‑prone communities like Pasadena/Altadena. Climate change is also stressing water supplies and increasing the risk of catastrophic infrastructure failure.

Worse still, the administration has moved to block California’s ability to lead. By revoking California’s long-standing Clean Air Act waiver, the federal government has stripped not just our state, but the entire nation, of the benefits of stronger vehicle emissions standards and the transition away from combustion engines. When California cannot lead, everyone loses.

The Global Domino Effect

The United States is the largest historic contributor to climate change and remains the second-largest annual emitter. If America abandons climate responsibility, other nations may follow. Scientists warn that this could trigger a dangerous global domino effect, pushing the planet beyond critical thresholds of warming.

Unchecked emissions mean more crop failures, more water insecurity, the spread of vector-borne diseases, mass displacement, and escalating conflict. This is not alarmism. It is the sober assessment of decades of peer-reviewed research.

Why the Greater Pasadena area Still Matters

And yet this is not the end of the story.

Pasadena has made a promise: to move toward 100 percent carbon-free energy by 2030. That promise is grounded in facts, guided by science, and powered by local leadership. It stands as a moral and practical rebuke to federal abdication.

Local action matters more than ever. Cities can invest in clean energy, building electrification, urban cooling, tree canopy expansion, and resilient infrastructure. Communities can demand transparency, defend science in court, and support state and local leaders who refuse to surrender to denial.

Perhaps most importantly, we must protect morale. The greatest hidden damage of this administration’s actions is the attempt to normalize despair: to convince people that caring is naive, that science is optional, and that destruction is inevitable.

It is not.

A Call to Action

For those who believe in evidence, in public health, and in a livable future:

• Support local and state climate initiatives and organizations like Pasadena100.

• Speak out, loudly and publicly, against the repeal of the endangerment finding.

• Stand with scientists, educators, and public servants under attack for telling the truth.

 • Vote, organize, and litigate where necessary.

The Trump administration may choose to abandon climate science, but Pasadena must not abandon reality. The cost of silence will not be measured in politics, but in the healthy lives and future we leave behind.