Wisconsin's ash trees continue to die because of emerald ash borer infestations that have spread throughout southern Wisconsin in recent years.
State officials said that about 20 counties in Wisconsin have had to deal with the insects. The ash borer was discovered in the city of Detroit 11 years ago and has now spread througout the Midwest.
With no easy ways to stop the spread of the insects, officials are now looking for ways to contain them, typically by setting up quarantine areas around the state. They said that when an ash tree finally dies after an infestation, that is an indication that the tree has...
