Earthquakes can destroy entire cities in mere minutes and send shock waves rippling around the world. These devastating quakes become even more deadly when followed by monster waves. Tsunamis may travel faster than a jet across thousands of miles of ocean. Once they reach the coast, these huge walls of water can wash away everything in their path in one fatal whoosh. No place on Earth is entirely safe from earthquakes. But the technology to detect these hidden terrors is constantly improving. Discover the most fearsome earthquakes and tsunamis throughout history, as well as the science behind how and where these disasters strike.