What range of sounds can humans hear?
Humans can hear sounds from about 20 to 20,000 hertz, but we lose the highest frequencies as we age.
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Hearing Facts
Hearing facts and facts about hearings.
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What shape is the cochlea?
The cochlea, the hearing organ in the inner ear, is shaped like a snail shell.
Which is the only work Michelangelo signed?
Michelangelo's "Pietà" is the only work he signed. According to legend, he carved his name after hearing visitors credit it to another artist.