February 14, 2017
Concrete conundrum
shaoran2012Image copyright iStock Nearly 20 years ago, poor families in Coahuila state in Mexico were offered an unusual handout from a social programme called Piso Firme. It was not a place at school, a vaccination, food, or even money. It was $150 (£118) worth of ready-mixed concrete. Workers would drive concrete mixers through poor neighbourhoods, stop outside a home, and pour the porridge-like mixture through the door, right into the living room. They showed the occupants how to spread and smooth the gloop, and made sure they knew how long […]