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Sound-Wave Emitting Buoy that Kills Algae
A company is setting up its first Florida test of a buoy that kills blue-green algae. The buoys emit low-level sound waves that disrupt a single-celled algae’s flotation controls, thus starving it of sunlight, said U.S. Division Director Greg Eiffert. To prevent adaptation, the buoys shift frequencies. They are solar powered and reportedly don’t kill fish or other plant life.

Starting in December, the first pilot project will be in an upscale subdivision outside Naples called Treviso Bay.  One buoy covers an open region of 50 acres. They have been shown to kill many types of single-cell algae, but need to be in a confined water body rather than an open-flowing coastline.


 
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Using Technology to Track Marine Debris - Rio de Janeiro's government has turned to a high-technology Dutch institute to help it try to better collect floating garbage in Guanabara Bay, the sailing venue for the 2016 Olympic Games, as officials face severe criticism over the polluted waters.


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