A video posted online of two orcas circling in an algae-infested pool in southern France has brought a fresh wave of worldwide concern for cetaceans, Wikie, 24, and her 11-year-old calf, Keijo. France ...

CLARKS SUMMIT, Pa. — This week's Home & Backyard "Weed Of The Week" is string algae. This green "hair-like" algae can be found in ponds. String algae is actually quite normal and is part of a balanced ...

Harmful algae were reported this month at Tonto National Forest, and park rangers are advising people visiting lakes to avoid contact with the water, as it could be poisonous. Here's what you need to ...

A number of Minnesota cities have reported blue-green algae blooms this summer, causing the temporary closing of some beaches. Blue-green algae is bacteria that can be toxic for both humans and pets. ...