Upper Prior Lake in Minnesota is recovering after years of cloudy, algae-filled water, thanks in part to an unusual tactic that helped crews target invasive carp, as the Minnesota Star Tribune reported. What happened? In Scott County, the 400-acre Upper Prior Lake was swamped by invasive carp. Their feeding behavior disturbed bottom sediment, sent nutrients back into the water, and left native plants struggling to survive, per the paper. After y…