By MARIAN BURROS April 5, 2006 http://www.nytimes.com/2006/04/05/dining/05well.html?ex=1301889600&en=9eae0f4e93407166&ei=5090&partner=rssuserland&emc=rss [Letters to the editor: http://www.nytimes.com/ref/membercenter/help/lettertoeditor.html ] ARSENIC may be called the king of poisons, but it is everywhere: in the environment, in the water we drink … [Read more...] about Chicken With Arsenic? Is That O.K.?