Most of us think of earthworms as benign creatures. Gardeners are always happy to spot a worm in the flowerbed. And many anglers say they're the best thing for catching fish. But scientists are beginning to learn worms aren't so friendly to forests. Mainstreet Radio's Stephanie Hemphill reports. Outcue: You can find a link to the Minnesota Worm Watch web page by going to Minnesota Public Radio - dot - org.