After the earthquake and tsunami last March in Japan, people on the West Coast have lived with the horrible possibility that they have been subjected to a very real, yet entirely invisible reminder of Japan’s devastation: radiation. Now we can look forward to a tangible record of the disaster as well, as 5 to 20 tons of debris that washed into the Pacific Ocean heads our way. That’s 5 to 20 tons of things – cars, boats, appliances, boots, washbasins, furniture, buoys, and rooftops – that were once a part of the lives of tens of thousands of people.