Would you feel an earthquake if it happened? Are you sure? The ground moves all the time without anybody paying it any attention. But at their most extreme, earthquakes can move mountains and even shift the North Pole!

On shaky ground -- Earth movers -- Faulty crust -- Tipping the scales -- Ripple effects -- The ring of fire -- Cracking up -- Walls of water -- A monster quake -- Death and destruction -- Drop, cover, and hold! -- Shaking but not breaking -- fruity fissures -- Glossary -- Read more -- Learn more online -- Index -- About the author.