Clearing Japanese tsunami's '100 years of debris'

One year on from the devastating earthquake and tsunami, Japanese authorities estimate a staggering 25 million tonnes of debris was generated in the three worst-affected prefectures.

The task of clearing up the refuse is still far from complete, with officials in Miyagi prefecture saying they face 100 years' worth of waste.

Sasade Haruyasu, head of Miyagi's debris team, gave BBC News a look at the scale of the problem.