Follow latest updates at twitter.com and www.facebook.com Japan is dealing with the aftermath of a massive tsunami. The official number killed is now 375. That's a figure which even the most optimistic estimates suggest will rise dramatically. The huge wave was caused by the biggest earthquake in the country's history. Japan has now asked the UN to send rescue teams to help deal with the disaster. Another earthquake has also hit central Japan in the past hours, although there are no reports of damage from this latest aftershock. An emergency situation has been declared at the Fukushima nuclear plant in the north east, after it was damaged. The pressure inside the reactor is rising, raising fears of a radiation leak. But Japan's nuclear safety agency says to reduce the pressure, radioactive vapor may be released, posing no risk to humans or the environment.

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