A smart paint could soon be helping blind people navigate cities by sending vibrations to their canes at street crossings.
It can be hard to make your way across the street in a busy city - constantly dodging cars, bikes and other pedestrians. What about for those who are visually-impaired?
A Dutch architecture studio has devised a range of floating solutions to provide urban slums with sanitation, electricity, health care and other basic services, while also reducing the slums' waste problem at the same time. How?