There are two options - go low or go high. Lower frequencies than humans can hear - below 20Hz - are known as infrasound. They're used by animals including elephants, whales and hippos to communicate.

The Philippine Institute of Volcanology and Seismology (Phivolcs) recorded 28 more ash emissions or “ashing” events at ...

The human ear is best at registering sounds above the frequency of 20 hertz. Anything below that is called infrasound. Horror movies like "Paranormal Activity" use sounds right around that 20 ...

The Philippine Institute of Volcanology and Seismology (Phivolcs) recorded 28 more ash emissions or “ashing” events at ...

MANILA, Philippines — Kanlaon Volcano on Negros Island emitted volcanic ash for over an hour on Saturday, November 9.

Sensorimotor processing refers to a process by which sensory information or input is coupled or integrated to a related motor response in the central nervous system. This process underlies both ...

THE severe earthquake which occurred in New Zealand on June 17, 1929, was remarkable for the great distance at which the sounds which accompanied the shock could be heard.

A time-lapse footage showed gray ash being entrained or brought out by continuous degassing from the Kanlaon Volcano summit ...

State seismologists reported on Friday “continuous degassing” at the Kanlaon Volcano summit crater. “The ashing events were observed between 07:20 a.m. and 07:39 ...

KOCHI: Wrapped in blood-red attire that flickers like a flame, the figure looms with a jagged, towering headdress. The form ...

MANILA, Philippines — Kanlaon Volcano expelled a column of ash on Friday morning, November 1, Phivolcs reported. Captured by ...

PHIVOLCS reminds the public that Alert Level 2 (increasing unrest) prevails over Kanlaon, but that current activity at the ...