How to get rid of invasive algae on ponds or along the beaches, the rotting of aquatic life? In the journal Applied Acoustics, a British team confirmed that ultrasound can help in the fight against this plague.

Periodically, lakes, ponds and oceans are saturated with algae fueled by excess nitrogen and phosphorus from agriculture in particular. So much so that the beaches should be closed regularly, the time to collect the algae decay. Some may be harmful to human health. In addition, these plants tend to pump all the oxygen at the point of suffocating the other living beings. (See for example the images in this article Rue89 on the Olympics in Beijing last year) (more…)