How The Earth Was Made: Tsunami

Tsunamis are one of the most terrifying forces of nature, destroying all in their path. The December 26th Tsunami is estimated to have released the energy of 23,000 Hiroshima-type atomic bombs. What are the enormous forces that generate these catastrophic waves deep on the ocean floor? Unearthing compelling evidence that the West Coast of America was once struck by a tsunami every bit as big as the one that devastated the Indian Ocean - and its due to strike again, soon. Whilst East coast cities from New York to Miami face the threat of a truly colossal wave that could be generated by the collapse of an active volcano off the coast of Africa.