Scientists look to ultrasound for control of blue-green algae

Blooms of blue green algae, also known as cyanobacteria, are not something you want occurring in your water system. When ingested, the microorganisms can cause rather unpopular reactions such as headaches, stomach aches, fever, diarrhea, nausea and vomiting. Oh yes, and they can also kill people, not to mention livestock and wildlife that unsuspectingly drink from affected lakes and rivers. Fortunately, researchers may be on the way to a green (as opposed to blue-green) method of controlling the problem: low-frequency ultrasound.

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