Scientists investigating 'unprecedented' algae bloom in Lake Superior
August 14, 2018 - MPR’s Dan Kraker reports on unprecedented algae bloom along the South Shore of Lake Superior. Researchers are trying to figure out the cause. They suspect the bloom may be related to recent historic heavy rains and flooding that washed tons of sediment into the lake. Researchers expect to see more periodic algae blooms in Lake Superior, in part because of that increased water temperature, an effect of climate change.