Japan Tsunami Debris Mapped

Nearly a year after the devastating Japan earthquake and tsunami the debris washed out to see is still being tracked by the International Pacific Research Center based in Hawaii. The mapping is mainly done on computer projections but debris has spread nearly 4000km into the Pacific and the debris field is close to 2000km across. It is estimated that there could be millions of tonnes of debris floating around which could pose a threat to shipping and wildlife.

http://www.bbc.co.uk/news/science-environment-17122155