A 2024 satellite photo shows an unusually active bloom of toxic cyanobacteria swirling in the water of Nevada's Pyramid Lake.

A cyanobacteria bloom is expanding in western Lake Erie, covering an area of about 160 square miles from the shoreline of Monroe County, Michigan, to the shoreline of Ottawa County, Ohio. The National ...

On a lake, it can look like pea soup, a green mat or blue or green paint. It might also look purplish or pink. No matter the color, it’s cyanobacteria, and it's toxic. While typically a late summer ...

Boston health officials warned people and their pets to stay away from the Muddy River in Boston's Fenway neighborhood due to a toxic algae bloom in the water. They should avoid direct contact with ...

Nitrogen is a bit of a conundrum. In its gaseous form it's the most abundant element in the atmosphere, but few organisms can ...

MONTEREY — Officials are warning visitors to Lake Garfield to steer clear of blue-green algae blooms, which can pose a health risk to people and animals. Testing on June 3 revealed that the lake has ...

WESTFIELD, Mass. (WWLP) – Record-breaking heat means people across the state need places to cool off, but some popular beaches in Westfield are off limits to swimmers. Mass.gov states Kingsley Beach ...

A toxic algae bloom continues to thrive in the Charles River less than a week before thousands of rowers arrive for the Head of the Charles River Regatta, a three-day world-renowned sailing ...

Health officials in Massachusetts are spreading the word about harmful blooms of cyanobacteria, also known as blue-green algae, in lakes and ponds around the state. In Plymouth, the public health ...