Schumann resonances
The Schumann resonances (SR) are a set of spectrum peaks in the extremely low frequency (ELF) portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic resonances, generated and excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere.
RE: 50 Years of Failed Eco-pocalyptic Predictions
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50 Years of Failed Eco-pocalyptic Predictions