date:Oct 11, 2012
ially when stirred up by the drilling of a well. But just because it's natural doesn't mean it's not bad, said Harbut. Asbestos and gasoline are also natural.
Then there are the unnatural sources. About 1.6 million tons of arsenic have been enlisted for agricultural and industrial purposes in the U.S. since 1910, according to Consumer Reports. Much of the arsenic used is of the less toxic organic form. However, as Hamilton said, every organic form can be broken down by micro-organisms and poten