00:04Humans and animals have an electrical hum that courses through our bodies and a new study
00:09suggests it was caused by lightning. Researchers led by Tel Aviv University proposed that living
00:15organisms developed electric activity after being exposed to global lightning activity
00:20over billions of years. When lightning strikes the ground around the world about 50 to 100 times per
00:26second, it creates extremely low frequency waves of electromagnetic energy in Earth's atmosphere
00:32known as Schumann resonances. Researchers believe these atmospheric resonances sync up with ancient
00:39cells at a resonance around 8 hertz. Over time, as animals evolved, cellular activity slowly shifted
00:45to other frequencies depending on the different types of brain activity. Researchers say the Schumann
00:50resonance is closest to frequencies found when humans are in a deeply relaxed state,
00:55indicating that ancient life could have been in a state like deep relaxation. They say lightning
01:01and biological electrical activity could have synced by strikes, affecting calcium ion transfer
01:07in cells, but researchers aren't yet certain. A study was published in the International Journal
01:11of Biometeorology.
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