The cyanobacteria bloom, also known as blue-green algae, can sicken people and animals who come in contact with it.

The city is urging residents to avoid contact with a section of the Muddy River in Fenway after a harmful algae bloom was discovered in the water. Trump says he’ll meet with Putin next Friday in ...

Waters in Plymouth and Brookline tested positive for toxic blue-green algae blooms that can make people and pets sick.

Health officials in Massachusetts are spreading the word about harmful blooms of cyanobacteria, also known as blue-green ...

R.F.K., Jr., and the MAHA movement are at war with synthetic food dyes. Scientists are racing to reinvent the culinary color ...

Australia has more national parks than any other country in the world. Whether you hit the trail, take flight or head out on ...

In the Boundary Waters, more than 100 lakes are considered impaired because of mercury levels that lead to limits on fish ...