ALAN BERNER / THE SEATTLE TIMES
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Hey, kids: We made the global-warming mess, can you clean it up?
Adi Braun in Sooz Stahl's Ballard High class does a run-through before coming to the Imagine Tomorrow competition. Her team's project: Sustainable Subterranean Hobbit Housing made of cob, a building material similar to adobe that is fireproof, resistant to seismic activity and inexpensive.