] In a world with millions of refugees, numerous war zones
] and huge areas devastated by natural disaster, aid
] agencies and militaries have long needed a way to quickly
] erect shelters on demand.
]
]
] Soon, there will be such a method. A pair of engineers in
] London have come up with a "building in a bag" -- a sack
] of cement-impregnated fabric. To erect the structure, all
] you have to do is add water to the bag and inflate it
] with air. Twelve hours later the Nissen-shaped shelter is
] dried out and ready for use.

[ Sweet! -k]