Tune Your Engine - Tsunamis

Five-hundred years ago, many Maori abandoned their settlements on the coast and moved inland to fortified hilltops not because of fear of invasion, but because they feared attack from the sea - tsunamis. We know from recent history what a tusnami can do. They are killer waves that can change history and culture according to tsunami geologist, Dr James Goff. Professor Goff from the University of New South Wales travels the South Pacific searching for evidence of ancient tsunamis in hopes of understanding modern risks.