phosphorus

A mysterious algae first started to coat northern Michigan lakebeds about a decade ago. After years of research, scientists and residents are left asking the same question: what has changed in the water that's causing it to grow?

Harmful algal blooms are a growing concern in the Great Lakes. The toxins they produce can close beaches and even poison drinking water. What’s fueling these blooms? Phosphorus – a key ingredient in agricultural fertilizers. But the way it’s being used comes at a cost.

Harmful algal blooms are a growing concern in the Great Lakes. The toxins they produce can close beaches and even poison drinking water. What’s fueling these blooms? Phosphorus – a key ingredient in agricultural fertilizers. But the way it’s being used comes at a cost.

John Janssen remembers the moment he realized Lake Michigan was about to change.It was a September day in 1990 and he was diving looking for sculpin — an…

Here's a question for you lovers of the Great Lakes: Which lake is the clearest? You probably guessed Lake Superior. Well, that was true for a long time.…

A report on fish farming in the Great Lakes suggests Michigan should move carefully if it allows the industry to start up. State officials asked a...

Michigan officials are taking a victory lap in their efforts to reduce the amount of phosphorus flowing from state farms and other sources into Lake...

OK, this is where I fess up and tell you that the answer to that headline is "only time will tell." A scientific advisory panel is studying the...

There’s a bloom of cyanobacteria in Lake Erie right now. Scientists with the National Oceanic and Atmospheric Administration are predicting it could...