Earth and the Environment

What is atmospheric dust made of?

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Sources of atmospheric dust are winds blowing over dry earth (plowed fields, deserts, and roads), the various products of combustion, volcanic eruptions, salt spray from the oceans, pollen and other material from plants, and meteoric particles. The detonation of nuclear devices in the atmosphere creates radioactive dust (fallout), a serious hazard to all forms of life. Dust from smoke is a serious urban problem (see air pollution).

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Get more facts and information about dust, atmospheric . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

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