In recent months, the United States (U.S.) has witnessed an unprecedented contraction in its federal climate-health infrastructure. One of the most visible examples occurred in May 2025, when the U.S. government discontinued the National Oceanic and Atmospheric Administration’s (NOAA) Billion-Dollar Disasters Database, a resource used by researchers, emergency planners, and policymakers to track high-cost weather events since 1980 [1]. The loss of this data platform is part of a broader suppression of climate data, defunding of research, and political rhetoric that marginalizes the health impacts of climate change [2].

The health effects of climate-driven disasters are well-documented. Heatwaves, wildfires, floods, and hurricanes are associated with respiratory and cardiovascular disease, infectious disease outbreaks, mental health crises, and traumatic injuries [3–6]. Disruptions to healthcare delivery, electricity, and clean water access compound these impacts. The elimination of tools designed to monitor and forecast these events directly impairs public health systems’ ability to prepare and respond.

Disproportionate harm falls on already vulnerable populations—children, the elderly, people with chronic conditions, and those of lower socioeconomic status [7–9]. Surveillance and early-warning systems are particularly vital to mitigating impacts on these groups. Without timely and localized data, responses become reactive rather than preventive—and health inequities deepen.

The dismantling of the NOAA database is one in a series of coordinated rollbacks. In early 2025, the U.S. Environmental Protection Agency announced one of the largest deregulatory actions in its history, which included curtailments in air quality monitoring, heat index surveillance, and disease-relevant climate metrics [10]. These reductions occurred alongside an executive order—Protecting American Energy from State Overreach—which limits the ability of states to enact independent climate policies that might constrain fossil fuel development [2]. In addition to hindering any potential state regulatory efforts aimed at mitigating the risk of climate change, this order also disincentivizes data-sharing and public health preparedness activities between federal and state governments, further weakening collaborative health preparedness.

Simultaneously, research funding has been severely constrained. In February 2025, the administration withdrew federal support for any scientific research using the terms “climate” or “climate change” in project titles or abstracts [11]. This decision immediately impacted NIH-funded investigations into heat-related mortality, wildfire smoke exposure, climate-sensitive infectious diseases, and infrastructure resilience. In March, the National Institutes of Health (NIH) formally ended its climate-health research portfolio, citing shifting institutional priorities [12].

These restrictions represent more than bureaucratic defunding—they are forms of epistemic erosion. Suppressing climate-health research and data weakens the evidentiary foundation required for public health decision-making. It stifles academic inquiry, undermines public discourse, and promotes a culture of self-censorship among scientists.

The effects are not limited to the federal level. In 2024, Florida enacted legislation removing all references to “climate change” from state statutes and agency reports [13]. Simultaneously, the state reversed local climate mitigation strategies despite facing some of the most severe climate risks in the U.S., including sea-level rise, extreme heat, and intensified hurricanes [7]. These actions codify denialism and legally prohibit acknowledgment of well-documented environmental threats.

Even disaster response infrastructure is under threat. On May 8, 2025, the Federal Emergency Management Agency (FEMA) director was dismissed, purportedly for emphasizing the importance of climate preparedness in public remarks [14]. More recently, FEMA’s credibility was further called into question when Acting Administrator David Richardson reportedly stated during a staff briefing that he was unaware hurricane season had begun—a remark later described by officials as a joke, but one that sowed confusion and concern within the agency [15]. This incident occurred despite forecasts calling for an above-average Atlantic hurricane season, heightening fears about the agency’s leadership readiness. In the wake of reduced staffing and the dismissal of FEMA’s prior director, the episode illustrates a broader erosion of institutional competence at a time when emergency response capacity is vital. Such lapses in leadership, whether rhetorical or operational, further undermine public confidence in the federal response to climate-driven disasters and compound the risks posed by dismantled surveillance and response infrastructure.

Together, these developments signal a shift from climate inaction to active climate erasure. Suppressing data does not change the trajectory of planetary systems—it only blinds our ability to see them clearly. Climate-health preparedness depends on robust environmental data, transparent public communication, and a science-informed policy framework. Eliminating any of these components makes disasters deadlier, recovery slower, and inequities worse.

The implications extend globally. As the U.S. retreats from climate-health leadership, it weakens international collaboration on issues like pandemic preparedness, heat resilience, and vector-borne disease forecasting. The climate crisis is transboundary; so too must be our systems of surveillance, adaptation, and response.

The scientific and medical communities cannot afford to remain passive. The deliberate dismantling of climate-health infrastructure is a public health emergency. Clinicians, researchers, and public health practitioners must defend the integrity and visibility of climate data as foundational to health equity and security.

Journal editors and funding agencies can play a powerful role in countering suppression by prioritizing transparency, supporting climate-health research, and refusing to censor accurate terminology under political pressure. Institutions must resist the erosion of scientific norms by reaffirming that evidence—not ideology—guides their actions.

In medicine, we rely on data to inform diagnostics, allocate resources, and protect populations. The same must apply to our response to climate change. To ignore climate data is to abandon public health in the face of its greatest modern challenge. It is to walk into the next disaster with eyes wide shut.