When it comes to reshaping cities and creating community, a smart redeployment of social capital can be a more potent force than a chequebook. Lauren Scott-Harris is the founder of Earnt, an initiative that unites great brands with causes, incentivising people to do good deeds in return for access to in-demand products, services and experiences.

“When I had my son, I questioned the world in which he was going to grow up, with climate anxiety and consumption anxiety,” says Scott-Harris. “The premise of…