APPLE VALLEY, Minn. (WCCO) --Emerald ash borers are an invasive, yet common beetle that feeds on and kills ash trees in 40% of Minnesota counties. Apple Valley is one metro community seeing the ...

A Colorado city is fighting to save tens of thousands of its trees from a "devastating" death. But it's not deforestation or wildfires they are up against this time – it's a tiny half-inch-long bug.