Nearly one week after Japan was rocked by a disastrous 8.9 magnitude earthquake and tsunami, a large scale clean up effort is underway in the northern part of the country.

Japan's businesses try to survive despite shut-off transportation, road blockages and the nuclear crisis.

Since nuclear reactors were first rolled out in the 1960s, critics have questioned the safety of General Electric's Mark 1 boiling-water reactors. And in the wake of the earthquake in Japan, GE may face global pullback from nuclear technology.

In the U.S., Subaru and Toyota cancel overtime shifts amid uncertainty about their suppliers in Japan.