Paraphrased from Wiki (12/28/2010): Silver iodide (AgI) is an yellow, inorganic, photosensitive iodide of silver used in photography, in medicine as an antiseptic, and in rainmaking for cloud seeding.

Warning: Under the guidelines of the United States Environmental Protection Agency Clean Water Act, silver iodide is considered a hazardous substance, a priority pollutant, and a toxic pollutant.

Chronic ingestion of iodides may produce “iodism”, which may be manifested by skin rash, running nose, headache, irritation of the mucous membranes, weakness, anemia, loss of weight and general depression. Chronic inhalation, ingestion or skin contact with silver compounds may cause argyria characterized by blue-gray discoloration of the eyes, skin and mucous membranes.

Here's the issue: Thousands of birds and millions of fish are dying all around the world. Turtle Doves in Italy now show blue stains on their beaks (Iodine is indigo)..and it’s all become a big running joke to the media..ever heard of a canary-in-a-cage? Miners used to use them so they would know when gas levels were too high..if the bird dies you know it’s time to get out.

First they said it was fireworks...then it was a sonic boom...then they said it’s the internet in that there have been 85 incidences of mass bird deaths in the US in the last year alone; and the internet has just brought attention to it...this from a "prominent" Harvard biologist. It's a moving target.

Where's the blood test..? Where’s the mucous test...? Where is the EPA on this issue..?