The earthquake off the coast of Japan on March 11, 2011 was one of the biggest recorded, measuring 9 on the richter scale.

It was the resulting tsunami, however, that caused the most destruction. It devastated the northeast of Japan, leaving many thousands dead or missing, and hundreds of thousands homeless or evacuated from the area.

In addition, various power generators failed. Some older nuclear power stations risked meltdown and suffered explosions and radioactive leaks. Workers have battled for weeks to try and bring the situation under control. Radioactive material has been detected in various places.