Below our range of hearing, infrasound has the capacity to cause headaches and earthquakes. According to zoologists, using infrasound is the way elephants predict changes in weather. It also helps birds navigate as they migrate. And infrasound can also be used to locate underground oil or predict volcanic eruptions. Above our range of hearing, ultrasound has the capacity to kill insects, track submarines, break glass, perform noninvasive surgery, topple buildings, clean jewelry, catalyze chemical reactions, heal damaged tissues, pasteurize milk, break up kidney stones, drill through steel, and
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