Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

Earthquakes can happen anywhere on Earth.

The devastating earthquake registered at an 7.9 magnitude. At 14:28:04, the earthquake forever changed the lives of over 15 million people, including 87,150 who were killed or went missing.

Iain Stewart reveals some surprising facts about the world's most destructive and spectacular natural phenomena, from earthquakes and tsunamis to avalanches and volcanoes.