The proliferations have become increasingly common in recent years and can have health and economic impacts in affected areas.

Lawmakers will consider a proposal to fund a years-in-the-making plan to carve a channel through Ross Island on the ...

Red tide is a harmful algae bloom with a higher-than-normal concentration of microscopic alga known as Karenia brevis, according to the Florida Fish and Wildlife Conservation Commission.

A map, by the Gulf of Mexico Coastal Ocean Observing ... According to the National Centers for Coastal Ocean Science (NCCOS), some harmful algal blooms are caused by the microscopic algae species ...

A nonprofit group and Oregon State University scientists are seeking money for a plan to address toxic algal blooms in the Willamette River. (AP Photo/Don Ryan, File) Just about every summer in ...