In the stratosphere, “there are mysterious infrasound signals that occur a few times per hour on some flights, but the source of these is completely unknown,” Bowman said. Building solar ...

Long before modern technology made its progress, nature had its own mechanism in place to issue disaster warnings. Since ...

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Now, infrasound researchers wonder whether some animals can hear danger approaching. For instance, big storms such as hurricanes produce their own distinctive infrasonic signature.

Infrasound waves have frequencies between about 0.01 hertz and 20 Hz — too low for humans to hear but audible to some animals including elephants (SN: 9/8/12, p. 11).

Infrasound Opera In her experimental music-theatre piece, Ashley Fure plays sounds too low for the audience to hear, but they register their presence all the same. By Alex Ross October 23, 2017 ...

Infrasound is said to cause headaches and nausea that can last for days. At other times, it supposedly results in a feeling of generalized dread, sorrow, or fear.

YOU CAN'T hear it, which may be a good thing. Infrasound has a frequency below the lower limit of human hearing (about 20 hertz), and is emitted by just about every turbulent natural event on ...

Infrasound is also produced by storms, seasonal winds and weather patterns and some types of earthquakes. Animals such as elephants also use infrasound to communicate over long distances or as ...