Dihydrogen monoxide:
Is also known as hydric acid, and is the major component of acid rain.
Contributes to the Greenhouse Effect.
May cause severe burns.
Contributes to the erosion of our natural landscape.
Accelerates corrosion and rusting of many metals.
May cause electrical failures and decreased effectiveness of automobile brakes.
Has been found in excised tumors of terminal cancer patients.
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Despite the danger, dihydrogen monoxide is often used:
As an industrial solvent and coolant.
In the production of styrofoam.
As a fire retardant.
In the distribution of pesticides. Even after washing, produce remains contaminated by this chemical.
As an additive in certain junk-foods and other food products.
Information courtesy of DHMO.org