Japan's Tsunami: How It Happened investigates the science behind the earthquake and tsunami. The programme follows Professor of Geological Sciences Roger Bilham - who arrived in Japan days after the earthquake struck - as he sets off to view the devastation from the air. The earthquake moved Japan 12 feet closer to the USA. The earth was knocked off its axis and the rate of the earth's rotation was changed. This was one of the biggest earthquakes ever measured; the ground along the east side of Japan dropped by almost 10 feet, making the tsunami catastrophic. The documentary also follows renowned journalist Callum Macrae as he travels to the north, where the towns of Sendai and Ofunato used to be bustling fishing villages. Here he views the destruction first hand and meets the locals struggling to cope in the aftermath.

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Documentary