World's Deepest Earthquake at 467 Miles May Change the Way Scientists Look at Quakes

Scientists are currently trying to confirm a record-breaking temblor. If they succeed, it would fundamentally alter how geologists see earthquakes. The improbable earthquake occurred 467 miles beneath the surface of the planet, at a layer known as the lower mantle. There have been clues of lower mantle quakes here and there, but scientists have never been able to locate them.