I was surprised by this. Googling turned up this article from 1998: http://www.tcforensic.com.au/docs/article9.html, and of course Wikipedia: http://en.wikipedia.org/wiki/Fire_investigation#The_New_Scie... . Wikipedia makes it sounds like science is making it's way into fire investigation, starting with the 2005 and 2007 experiments by the ATF, but it's not clear how many fire investigators have paid attention to the results. Thanks for pointing this out. I learned something new today.