The Binishell, a structure made from pouring concrete over an inflatable balloon, is making a comeback. The inventor's son, Nicoló Bini, believes the inexpensive homes can be used to shelter and serve displaced people around the world. And it could work: Over 50 years old, the original Binishell is still standing, despite the extreme conditions on Mount Etna.
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(Image credits: via Wired, courtesy of Nicoló Bini)