We had to go underground
to find out what
we needed.
In 1964, German physicist Rütger Wever built an underground bunker in Andechs, Bavaria. He wanted to know what happens to the human body when it is removed from the Earth's electromagnetic environment.
Over 25 years and 418 experiments, 447 human volunteers lived in the bunker — shielded from all external time cues. No light variation. No temperature change. No electromagnetic fields.
Within days, circadian rhythms began to drift. Sleep and body temperature cycles desynchronized. The internal clock lost its coherence. Volunteers experienced the biological equivalent of permanent jet lag with no external cause.
When Wever introduced an artificial electromagnetic field at 10 Hz — close to the Earth's fundamental frequency of 7.83 Hz — the desynchronization resolved. Biology returned to normal.
In his own words, Wever noted that these findings were "of interest with regard to space — where these fields are entirely absent." The astronaut is the extreme case. The building is the everyday case nobody had thought to measure.
Wever, R. — Life Sciences and Space Research, 1970When humans leave Earth's electromagnetic environment — whether into a shielded bunker or into orbit — biology begins to degrade in ways gravity alone cannot explain. The field was invisible because we had always lived inside it. Removing it, even partially, makes it visible.
Most people now spend 90% of their lives in buildings that partially remove it. Not completely. But measurably. And measurably may be enough to matter.
Life Sciences and Space Research, 8:177–187. PubMed PMID: 11826883.