By Mia Tramz, TIME
NASA released
these images on Tuesday showing algal blooms in Lake St. Clair (above) and Lake Erie (below). The image was taken by the Operational Land Imager (OLI) on the Landsat 8 satellite on July 28, 2015 as part of
a larger effort between NASA, NOAA, U.S. Environmental Protection Agency, and the U.S. Geological Survey (USGS) to protect the public from toxic algal blooms in freshwater.
http://time.com/3985406/great-lakes-toxic-algal-blooms/