Japan's earthquake and tsunami disrupted the supply chains of hundreds of companies. Business in the U.S. have been affected too.

Food safety concerns means the Japanese could import more produce and meat products from the U.S., despite Japan's protectionist agriculture policy.

Even before the earthquake and tsunami hit Japan, the Fukushima Dai-ichi nuclear power plant was already one of the most trouble-prone facilities in the country. But as problems continue, many look to plant operator Tokyo Electric Power Company's questionable history.

The World Health Organization is reporting today there's a serious risk of food radiation in Japan. While the reports show only small amounts of radiation, many analysts are concerned the growing fear could further harm the fragile economy.