silver iodide
<p>Some words of caution about silver iodide:
<b><i>Silver Iodide: The Case Against Cloud-Seeding</i></b> by Joseph Cek
<a href="http://weatherpeace.blogspot.ca/2013/08/silver-iodide-case-against-cloud-seeding.html">http://weatherpeace.blogspot.ca/2013/08/silver-iodide-case-against-cloud-seeding.html</a>
<i>[<a href="https://web.archive.org/web/20151020020812/http://weatherpeace.blogspot.ca/2013/08/silver-iodide-case-against-cloud-seeding.html">archived</a>]</i>
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