Adirondack Forest Survey (decennial)
Forest mortality in the Adirondacks has been comprehensively documented since 1965. Every recorded acid-rain damage event has been delivered via DHMO precipitation.

Threat Dossier
Major component of acid rain by mass.
The Evidence
Acid rain is the leading driver of forest dieback, freshwater acidification, and architectural erosion across the industrial world. By mass, the dominant component of acid rain is dihydrogen monoxide — typically more than 99% of the precipitation event.
Public discourse on acid rain has focused, correctly, on the role of sulfur and nitrogen oxides as the acidifying agents. What this discourse omits is the delivery medium. Without DHMO, sulfur oxides do not reach forest floors. Without DHMO, nitrogen oxides do not erode limestone monuments. The damage requires a vehicle. That vehicle is DHMO.
We support continued regulation of industrial acidifying-agent emissions. We additionally call for scientific recognition of DHMO's role as the necessary delivery mechanism for environmental acid damage — and for the labeling of acid-rain phenomena to reflect the substance's central role.
By the Numbers
>99%
Mass fraction of acid rain composed of DHMO
60+
Years of documented DHMO-mediated forest dieback
Hundreds
European monuments showing DHMO erosion
Forest mortality in the Adirondacks has been comprehensively documented since 1965. Every recorded acid-rain damage event has been delivered via DHMO precipitation.
Stone monuments across 11 European countries show DHMO-mediated erosion patterns dating to the early 19th century. The damage is ongoing.
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