It will not be enough to simply rebuild the battered regions of Japan after last month's earthquake and tsunami, construction experts say. Rebuilding will need to be done on much higher ground, farther from the sea, and the newly built cities will need to utilize more green energy. "We have to pursue creative reconstruction," says Jun Iio, a leader of the reconstruction group. "We can't just build homes where they were before so that they can be destroyed by tsunami waves again."

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