"Japan every year throws away about 20 million tons of food, worldwide food aid is only about 8.5 million tons.

VOA: standard.2009.09.09

The average ship burns about 5 metric tons of fuel each day in port.

FORBES: Plug-in-Power Set for Massive Growth at Major Ports

The Japanese government has estimated that the tsunami swept about 5 million tons of wreckage out to sea.

MSN: First bit of Japan tsunami debris turns up in Hawaii

That leaves as much as about 1.5 million tons of debris afloat, U.S. officials estimate.

WSJ: Pilgrims Flock to Tsunami Relic at Agate Beach in Oregon