The Single Most Important Object in the Global Economy

In the spring of 2012, the Washington Conservation Corps faced a sudden influx of beach debris on the state’s southwestern shore. Time and tide were beginning to deposit the aftereffects of Japan’s March 11, 2011, tsunami. One of the myriad objects retrieved was a plastic pallet, scuffed and swimming-pool green, bearing the words: “19-4 (salt) (return required), and, below that, “Japan salt service.”