Beautiful lakeside views can quickly take an ugly turn when the water begins to look like a bucket of green paint. This typically signals the arrival of a harmful algal bloom, which happens when ...

A green pool is far from appealing, especially if you want to take a dip. You can fix it by pouring hydrogen peroxide into the pool, but with some caveats.

The reefs scattered throughout the tropics arose only after algae took up full-time residence in coral cells, supplying corals with abundant food and enabling them to build extensive shallow-water ...