After water, sand is the second most common substance on earth. Thousands of lawsuits, however, are premised on the notion that it should be plastered with warnings before being sold: the Sept. 15 National Law Journal has details. A defense attorney for U.S. Silica, the leading defendant in the suits, says the company has already "warned up and down the wazoo," which sounds uncomfortable, especially if sand is involved. See earlier reports here, here and here.