Officials say they are observing the Virgin River and streams for toxic cyanobacteria and cyanotoxins. Officials are asking ...

Warnings have been issued for multiple bodies of water within Zion National Park, including several areas visited by ...

The California Department of Fish and Wildlife and the California Department of Water Resources have issued a warning to ...

The South Carolina Department of Environmental Services continues its monitoring and advises caution in areas where blooms ...

Austin is starting its final attack against harmful algae blooms that killed several dogs in Lady Bird Lake. This is the ...

At the levels detected in the reservoir, the compound is non-toxic to humans, but has an “unpleasant” and “grassy” smell.

The United States Forest Service says these can sometimes form algal mats that may produce toxins, posing a potential risk to ...

Though early summer rains often fertilize algae in the Caloosahatchee, Florida's environmental agency hasn't yet said what ...

The harmful algal blooms (HABs) that have been responsible for sickening hundreds of marine mammals in the Pacific Ocean ...

The toxic algae bloom that's been killing and sickening so many sea lions and other marine mammals has finally ended.

After a brutal spring of toxic algae blooms turning sea lions into sick, snarling seaside hazards, anxious beachgoers can ...

Toxic algae has bloomed in more Cape Cod ponds than usual at this time of year, triggering advisories in Barnstable, Brewster ...