|The Center for Public Integrity|
Whether there's such a thing as a safe level of arsenic is debatable, though even small amounts of the toxin have been linked to lower IQ scores in children and instances of cancer in adults. At home, researchers found that the concentration of arsenic in an alarming number of groundwater wells exceeded 10 parts per billion -- the ceiling set by the United States Environmental Protection Agency. Dozens tested positive for more than 50 parts per billion.
How undercover animal rights activists are winning the Ag-Gag war