I added a webpage just to post information about emerald ash borer. I will add to it as more information become available.
The ultimate source for EAB information is the website EmeraldAshBorer.info which is a collaborative effort of the USDA Forest Service, Michigan State University, Purdue University and Ohio State University.
There are insecticide treatments that will help protect trees from emerald ash borer. See “Insecticide Options for Protecting Ash Trees from Emerald Ash Borer“
There are a few products available to homeowners for protecting ash trees. But there are many considerations before committing to protecting a tree. See the “Emerald Ash Borer: Homeowner Guide to Insecticide Selection, Use, and Environmental Protection“