Earth’s Heartbeat – The Mysterious Sound Generated Every 26 Seconds

Ever since the 1960s, seismologists on multiple continents have detected a mysterious pulse generated like clockwork, every 26 seconds. However, in the last 60 years no one has been able to figure out what this sound actually is. The “heartbeat of the Earth” was first documented in 1962 by John Oliver, a researcher at Columbia University. He figured out that it was coming from somewhere in the southern or equatorial Atlantic Ocean, and that it was more intense during the Northern Hemisphere’s summer months. Then, in 1980, Gary Holcomb, a geologist with the U.S. Geological Survey, also discovered the mysterious pulse, noting that it was stronger during storms. For some reason, the two researchers’ discoveries remained virtually unknown for over two decades, until Mike Ritzwoller, a seismologist at the University of Colorado, once again detected the “heartbeat” and decided to look into it. Unfortunately, none of the researchers have been able to figure it out. Researchers continue to work at solving the mystery, but it’s still nice to know that there are things that science can’t fully explain.