fmdog44
Well-known Member
- Location
- Houston, Texas
Science can't figure out why it happens but it may be due to volcanic eruptions, earthquakes or ocean movement. It was first discovered in 2005 by a grad student at the University of Colorado. Seismologists have been able to analyze the new data thanks to a 50% reduction in high frequency noise caused by human activity since the CIVID-19 pandemic began.