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9 Unexpected Things Found in Drinking Water

By Dana ChivvisDec 8th 2009 – 4:16PM
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(Dec. 8) -- Charles Duhigg of The New York Times today delivered the latest unsettling news about the nation's water supply: It's not as clean as you might think. An analysis of federal data from the last five years revealed that more than 20 percent of the nation's water-treatment systems have broken provisions of the...

Background on radium

Radium ( ) is a chemical element with atomic number 88, represented by the symbol Ra. Radium is an almost pure-white alkaline earth metal, but it readily oxidizes on exposure to air, becoming black in color.

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