PART I
They Can Repeal a Rule. They Can’t Repeal Physics.
In 2009, the Environmental Protection Agency issued what most Americans never heard of: the Endangerment Finding.
It simply stated that greenhouse gases — carbon dioxide, methane, nitrous oxide, and others — endanger public health and welfare.
That conclusion wasn’t radical. It followed the Supreme Court’s ruling in Massachusetts v. EPA, which held that greenhouse gases qualify as pollutants under the Clean Air Act if they threaten public health.
The science was already strong in 2009.
It is stronger now.
Repealing the Endangerment Finding does not repeal:
Radiative forcing.
Ocean heat uptake.
The Clausius-Clapeyron relationship.
Basic thermodynamics.
It attempts something else: to remove the federal government’s obligation to regulate carbon pollution.
That’s not symbolic. That’s structural.
Without the Endangerment Finding:
Tailpipe standards weaken.
Power plant regulations collapse.
Methane oversight fades.
Future presidents face legal barriers to restoring protections.
This is not “regulatory reform.”
This is dismantling the legal spine of U.S. climate governance.
The Science Since 2009
Since the finding:
Attribution science now links specific extreme events to human-caused warming.
Coral reef collapse has accelerated.
Arctic amplification is proceeding faster than projected.
Insurance markets are retreating from fire- and flood-prone states.
Scientists across disciplines — atmospheric physics, epidemiology, ecology — agree: the risk has intensified.
You can revoke a document.
You cannot revoke atmospheric chemistry.
yours truly,
Adaptation-Guide
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