Blooms of blue-green algae, or cyanobacteria, appeared in Lake Superior about a decade ago, sending scientists in search of answers to why a worrisome problem was surfacing in a lake that holds a tenth of the Earth’s surface freshwater.
Blooms of blue-green algae, or cyanobacteria, appeared in Lake Superior about a decade ago, sending scientists in search of answers to why a worrisome problem was surfacing in a lake that holds a tenth of the Earth’s surface freshwater.