But such a large amount of unaccounted-for water is not easily explained by current models of Martian evolution.

BBC: By BBC News Online Science Editor Dr David Whitehouse

Yet 72% of water being piped out of the reservoirs was unaccounted for.

FORBES: Magazine Article

Some Oreck employees are still unaccounted for, and the plant is still trucking in basic supplies, such as food and drinking water.

NPR: Vacuum Maker Oreck to Stay after Katrina