Science and technology

Associated Press
This May 28, 2012 photo provided by Chris Pallister shows a Japanese float is collected on the shore of Montague Island near Seward, Alaska. More than a year after a tsunami devastated Japan, killing thousands of people and washing millions of tons of debris into the Pacific Ocean, neither the U.S. government nor some West Coast states have a clear plan for how to clean up the rubble that floats to American shores. (AP Photo/Chris Pallister)

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