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Homeless people, empty homes.

Remember the article on "rationality"?

With more than 1 billion people worldwide now living in informal settlements, journalist Robert Neuwirth argues that squatters’ communities are among the primary creators of housing in the developing world. Now, in the context of a global foreclosure crisis, a squatters’ movement is emerging across the developed world to claim otherwise vacant buildings as homes.
After three years of staying in her sister's living room, Tene Smith decided to move her family into a home that had sat vacant on Chicago's South Side for more than two years. With the help o...
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