(From R to L) Reactors No. 1 to 4 are seen at the Fukushima Daiichi Power Plant in Fukushima is seen in this satellite image, taken and released by DigitalGlobe March 18, 2011. About 300 workers are racing against time to restore power and cooling systems to the six reactors at Fukushima Daiichi and try to avert the biggest nuclear catastrophe since Chernobyl in 1986. Japan has entered its second week after a 9.0-magnitude earthquake and 10-metre (33-foot) tsunami flattened coastal cities and killed thousands of people. [Xinhua/Reuters Photo]