Every 26 seconds, Earth’s ‘mysterious heartbeat’ repeats; scientists still don’t know why

Since the 1960s, scientists have been intrigued by a mysterious seismic pulse occurring every 26 seconds. Originating in the Gulf of Guinea, this consistent tremor defies typical seismic activity. While theories range from ocean wave resonance to volcanic activity near São Tomé, the exact cause of this 'Earth's heartbeat' remains an unsolved enigma, captivating geophysicists worldwide.