I have not seen this one before.
Thanks BBell and TXnMA!
I’ll have to check this one to see if it’s just similar, or an earlier version:
Early chemical warfare comes to light
ScienceNews | 11 Jan 2009 | Bruce Bower
Posted on 01/12/2009 7:37:48 AM PST by BGHater
http://www.freerepublic.com/focus/f-chat/2163130/posts