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Pedestrians are reflected on a quotation board of the Tokyo Stock Exchanges in Tokyo on May 16, 2013. - 

Things have been electric on the Japanese stock market recently, with the Nikkei reaching 5 year highs. But the country is in need of energy and is hunting for it in innovative ways at home and overseas.

Rupert Wingfield-Hayes joins Marketplace Morning Report host David Brancaccio to explain.