Yishai sent this Instapundit item: U.S. Military Warns of Oil Shortage by 2015.
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Reader Damon S. suggested a web site with some free plans for building beehives.
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Matt B. mentioned a clever “stealth” house built into a grain silo.
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David R. was the first of several readers to mention this: MIT Student Develops Cutting Edge Low Cost Healing for the Developing World