Discussion of research into the physics behind mysterious sounds resembling cannon fire, heard at Barisal, India, and other locations around the world.

Investigation into the cause and adverse health effects of the Bristol Hum, an obnoxious low-frequency noise heard in England. Conclusion is that the hum is due to a pulsed electrical signal.

Yahoo Group for discussion of mysterious hums.

New York Times article about a mysterious low-frequency noise reported by residents of Kokomo, IN.

Account of the legends and modern accounts of the mysterious sounds heard in Moodus, Connecticut.

Information and links about the "Taos Hum," a low throbbing sound heard in quiet locations worldwide, especially in the USA, UK, and northern Europe. It is not detectable by microphones or VLF antennae, and the source is still a mystery.

Article about the Moodus (Connecticut) noises and the findings of recent investigations that linked these noises with seismic activity.

About.com page gathers together information about mysterious booms, persistent hums, and underground rumblings that defy explanation. Includes audio clips.

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Discussion of the nature and origin of anomalous sounds and electromagnetic effects associated with the entry of bright fireballs into the atmosphere.

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