Ultrasonic attacks are unlikely, but exposure to ultrasounds is unhealthy

Keep an eye out — I mean, an ear out, for ultrasounds.

Marine creatures hear us when we scuba dive, kayak, and even swim

Shh, swim lightly — the animals can hear you.

Using ultrasound to operate on the brain

A preliminary study from Switzerland, published this month in the Annals of Neurology, proved the effectiveness of a new method of non-invasive brain surgery: using a newly-developed operating device that relies on ultrasound, in conjunction with magnetic resonance imaging (MRI), allowed neurosurgeons to precisely remove small pieces of brain tissue in nine patients suffering from chronic pain without removing skin or skull bone. Researchers now plan to test it on patients with other disorders, such as Parkinson’s. Neal Kassell, neurosurgeon at the University of Virginia, not directly involved in the study.

Cleaning smudge using only water and ultrasounds

Usually, we have to use all sorts of disinfectants, soaps and detergents to scrub away smudge, be it sticky, oozy or greasy. This is not only annoying during housekeeping, but also following medical procedures when instruments have to be cleaned. Researchers at University of Southampton have been working for several years on a different kind high tech solution. They developed a gun-shaped device called the StarStream equipped with a special nozzle that injects water bombarded with ultrasound waves. The mix is so powerful that virtually any kind contamination can be removed.