Scientists Checking To See If Lake Superior Algae Bloom Is Toxic

Scientists at the University of Minnesota-Duluth are checking to see if a large algae bloom on Lake Superior is toxic.  The bloom has melted away for now, but it may have extended for up to 50 miles from near Superior to the Apostle Islands.  The big lake is so deep and cold, blue-green algae blooms are very rare.  So far, there has been little impact on Lake Superior’s water quality.  The scientists say they should know whether the bloom was toxic by the end of this week.