Toxic algae in lakes and rivers is a growing problem for cities, pets, swimmers and fishers — and, increasingly, the farmers who are causing it. Harmful algal blooms are becoming a regular summer feature around the country, thanks to fertilizer-laden runoff and hot water temperatures. NOAA estimates algal blooms have cost coastal economies $1 billion over the past several decades in lost recreation, tourism and seafood harvesting. Read the full story by POLITICO.