There are now dozens of genetically engineered tree test plots in the

U.S. This concerns ecologists, in regards to the possibility of these
experimental plants inadvertently spreading into the wild, thereby throwing
off the balance of species in forests across the nation. In related news,
the US Pentagon has awarded Colorado State researchers a half million
bucks to genetically engineer a tree that would change colors when exposed
to a germ or chemical attack. Taxpayers and government watchdog groups
are befuddled by this expenditure—as if the thousands of people keeling
over in the streets from a chemical attack wouldn’t be indicative enough
that there was something wrong. /old_articles/ge/080103_frankentrees.cfm