State health officials say harmful algal blooms could look like paint, scum or foam on top of the water.

Blue-green algae health alert issued for Lake Jesup in Florida. Avoid contact with contaminated water to prevent harm to ...

First there was “the dress,” then there was the sneakers, now there’s a debate over the color blue. If you’ve ever argued with a friend over whether something is blue or green, you’re not alone. A new ...

Add Yahoo as a preferred source to see more of our stories on Google. Illustration: Guardian Design (Illustration: Guardian Design) It started with an argument over a blanket. “I’m a visual ...

A potentially harmful bloom of blue-green algae at two popular Minneapolis beaches has prompted city officials to issue an ...