FILE – This Sept. 1, 2015, file photo shows a warning sign for algal toxins on a beach in Maumee Bay State Park, located on Lake Erie in Oregon, Ohio. Researchers are working on creating an early warning system that can spot when algae begins showing up on hundreds of lakes across the U.S., using real-time data from satellites that already monitor harmful algae hotspots on Lake Erie in Ohio and on the Chesapeake Bay along the East Coast. (AP Photo/Haraz N. Ghanbari, File)
Featured Photo Galleries
