MARSTONS MILLS — During the first few days of December, observers looking out at Mystic Lake may have noticed an unusual sight: bands of milky clouds fanning out from beneath a pontoon-style boat as ...

After years of efforts to improve water quality at Lake Carmi and curb cyanobacteria blooms, the state has approved a permit to try applying alum at the popular boating and camping destination.

Orlando’s new pollution-fighting tactic renders ailing lakes briefly aquamarine like the waters of the Florida Keys. It’s a tried-and-true application of a liquid chemical compound called aluminum ...