Insect Scourge: Two New Species Invade U.S. Every Year

From LIVESCIENCE.com by Rebecca Kessler 9/5/2010 Every year, exotic insects like the Asian longhorn beetle and the emerald ash borer, aka the Green Menace, kill millions of trees across the United States.  And every year inspectors intercept a few new would-be invaders at the nation’s ports of entry — but they can’t stop every single one.  [...]