From the air, northern Idaho's lakes appear as magnificent pools of blue, shimmery water. But if you look at a microscopic level, you'll find signs that Idaho's lakes, like waterways around the world, are in trouble. A microscopic organism threatens the water quality of these lakes putting the recreation economy of the entire region at risk. The Outdoor Idaho team follows scientists and lake managers as they investigate the increasing levels of cyanobacteria or blue-green algae in Idaho's northern lakes.