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Since then, researchers from various fields, including acoustics, geology, and psychology, have attempted to identify the source of The Taos Hum. Some have suggested that it might be caused by secret military experiments or even alien activity. While these theories are intriguing, they remain speculative and lack concrete evidence.

Launched in 1980 by , The Unexplained was a weekly magazine that built into a comprehensive encyclopedia of the supernatural. Unlike its sensationalist counterparts, it was praised for its journalistic approach to documenting high-strangeness.

The print run was small—often only a few hundred copies per quarter—which made physical copies collector’s items. But in 2008, the editorial team made a pivotal decision: they began releasing directly as downloadable PDFs.

The hum changed again.

For decades, residents and visitors to Taos, New Mexico, have reported a strange, low-frequency humming noise with no apparent source. Dubbed "The Taos Hum," this phenomenon has been described as sounding like a distant diesel engine, a low-flying aircraft, or even a gentle, persistent vibration. Despite numerous investigations and scientific studies, the cause of The Taos Hum remains a mystery.

Discover an exclusive PDF from Unexplained Magazine — deep dives into the world’s strangest mysteries, curated investigations, and original photography you won’t find anywhere else. This limited-edition digital issue includes long-form features on unexplained phenomena, archival documents, interviews with primary witnesses, and an illustrated dossier of cold cases.