The "Unidentified Seismic Object" is Finally Identified

Scientists who keep their eyes on seismographs picked up a unique signal last year that lasted nine days. It went right past most of us, but researchers couldn't figure out what it meant. Did we really have an earthquake that lasted nine days? The signal was too steady for that, besides being strangely sustained. There was also a tsunami in Greenland, a wave taller than any seen before. Did an earthquake cause that? It took almost a year for scientists to figure out what happened to cause the nine-day anomaly, but when they did, it was not only surprising, but almost comical to picture. Yet it's not funny, because these extreme events will only get worse as the temperature of earth rises. Reid Reimers of SciShow explains how the mystery of the nine-day signal was unraveled. There's a 40-second promotional break at the three-minute mark. -via Damn Interesting