Before the water authority began treating water at its current standard, Southern Nevada saw more widespread algae blooms, such as in 2001 when much of the lake went green. Algae is not a concern ...

Huge green blooms now regularly ... over the past century has made the lake like a supersize petri dish. The vapors come from rotting mats of toxic algae that thrive in Okeechobee’s shallow ...

During periods of low wind and calm waters, Cyanobacteria (formerly called blue-green algae) can descend to absorb phosphorus from deeper waters and ascend to near the lake surface to absorb sunlight ...

An curved arrow pointing right. One of China's largest freshwater lakes, Lake Tai, has turned completely green after unusual algae growth this year. Local reports say algae density is 38.7% ...

The lake in particular has been besieged by nutrient pollution for decades, causing unprecedented blooms of blue-green algae. Also known as cyanobacteria, blue-green algae produce cyanotoxins, which ...