The briefing
A Colombian innovator developed interlocking blocks made from discarded plastic and rubber that assemble into homes. By 2015, the system had sheltered 42 displaced families and enabled construction of a 40-square-meter house in about five days.
Original headline
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