Commentary: Beneath the threshold of human perception lies an invisible ocean of sound — and scientists are just beginning to ...

Sometimes, the most important sounds are those that cannot be heard. Take infrasound—acoustic waves below the range of human hearing. Although nuclear weapons blasts, midair meteor explosions, ...

The next time you walk into a purportedly “haunted” house and sense a ghostly presence, consider that those feelings might be due to vibrating pipes, mechanical or climate control systems, rumbling ...

Infrasound is very low-frequency sound, below 20 Hertz (Hz), which humans typically can’t hear. It can come from natural sources like storms, or from anthropogenic sources like traffic. Some animals ...

University of Sydney provides funding as a member of The Conversation AU. At the centre of claims about wind farms allegedly causing health problems is the infrasound that wind turbines generate as ...