https://www.epa.gov/climatechange-science/causes-climate-change
You are observing a verified, major change to the EPA website that is currently being reported in the news as of today, December 9, 2025.
What accounts for this "overnight" change is not a shift in scientific data, but a shift in government policy and administration.
The Specific Changes You Observed
According to reports from the Associated Press and other outlets today, the EPA has administratively altered its climate change webpages. The perceived shift from a "balanced" view (discussing both Human and Natural causes) to what you describe as a "rebuttal" (or a focus solely on natural phenomena) is due to the deletion of key sections:
Removal of Fossil Fuels: References to the burning of coal, oil, and natural gas—the primary scientific drivers of climate change—have been removed from the page.
Deletion of Consensus Statements: Sentences explicitly stating that "human influence has warmed the atmosphere, ocean, and land" (which were present as recently as October) were deleted.
Focus on Natural Variability: The page was restructured to focus on natural processes (volcanoes, solar activity, orbit). While the text still notes that these cannot explain recent warming, the affirmative explanation (that humans are the cause) has been stripped away.
Why This Happened
This is an administrative action by the current EPA leadership. An EPA spokesperson stated today that the agency is moving away from previous messaging to focus on "protecting human health and the environment" under a new direction that "no longer takes marching orders" from previous climate agendas.
In summary: The science of climate change (that human activity is the dominant cause) has not changed. However, the official presentation of that science on the EPA website was modified overnight to exclude human contributions, leaving you with a page that discusses natural causes in isolation.
