By TOM LAVENTURE
MERCER, Wis. - The Hurley School's field biology class was in Mercer Thursday for a day of land and water conservation at Little Turtle Flowage and MECCA Trailhead.
Diane O'Krongly, who teaches field biology at Hurley High School, said this class spends three hours a week helping clear the school property of buckthorn. It's an active class and that is why she requested the field trip to learn more about the importance of a diverse woodlands.
"This is great because they are really seeing that these professionals do this stuff that I've been doing w...