Tsunamis have been in the news far too many times over the past few years for their devastating effects on coastal cities. One of Japan’s nuclear power plants was recently slammed by a tsunami and the country is still dealing with clean up. But how does a tsunami work? What is occurring that causes the water to grow up to 100 feet high before slamming cities and towns? 

Alex Gendler of TED-Ed explains the science behind tsunamis in this trending video