Earth's mysterious 'humming' vibration has surged for more than a week, prompting reports from some people who say the phenomenon is disrupting their sleep and causing ringing in their ears. Known as the Schumann Resonance, this natural vibration is often described as the Earth's 'heartbeat,' a steady electromagnetic rhythm generated by lightning bouncing between the planet's surface and the ionosphere, which sits roughly 30 to 600 miles above the surface in the atmosphere. Space weather monitoring app MeteoAgent reported an intense surge in Schumann Resonance readings starting on Monday, labeling them 'high' and potentially disruptive. However, experts cautioned that such...