During the heatwave, I spread a layer of mulch over my backyard in preparation for fruit tree planting and by the next day found a number of dead, shiny green beetles on top of the mulch. These were ...

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.