Videographic: Why some spots on earth see so many earthquakes

April 3, 2014

CHILE, Iquique : A powerful 8.2-magnitude earthquake hit Chile's Pacific coast Tuesday, killing at least five people as tsunami waves of more than two metres lashed the shore. Earthquakes are the world's deadliest and most damaging natural disasters. Caused by movements of the Earth's tectonic plates, some regions are at constant risk.