A Colombian man struggling to build his own home helped create Lego-like bricks from recycled plastic; by 2015 the system was sheltering 42 displaced families and could build a 40-sq-m home in 5 days

A Colombian architect has developed a construction system that turns discarded plastic and rubber into blocks for temporary and permanent homes. The blocks can be assembled and dismantled like lego without glue, cement or water, offering a cheaper alternative to traditional construction in rural areas.

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