South Africa: Johannesburg shows how people and planet gain from greener cities
Johannesburg is one of a growing number of global cities racing to lower their greenhouse gas emissions through better urban planning
The sun has set in Johannesburg, South Africa and Nntuthuzelo Ndwandwa, 39, is returning home from her job as a customer care consultant. When once she would have glanced nervously into the shadows, now she walks through a complex illuminated by solar-powered lights and enters her home, where a solar-powered…