For several years, certain beaches in the Caribbean, Mexico, West Africa, and even French Guiana have been invaded by massive carpets of brown algae. These algae are called sargassum. They wash ashore ...

Officials at Cherry Creek Reservoir in Aurora are warning people about toxic blue-green algae, which can cause rashes, ...

Cyanobacteria blooms are the most common type of harmful algae in lakes, ponds and other freshwater systems in this country, ...

Long-time river watchers and local scientists say this is by far the earliest they’ve seen such a massive proliferation of ...

A team of researchers is tapping into the ocean’s vast body of free-floating environmental DNA to catch blooms before they ...