Three ways we will build the cities of the future from waste

From collecting aluminium once used in skyscrapers to building houses with self-healing cement and turning bottles into bricks

As the global population grows, it is also becoming more city-based with 70% expected to live in urban areas by 2050. It is a trend that has not escaped sci-fi in Hollywood, which reimagines the city of the future again and again, but there are those trying to bring sustainable cities to life in reality.

Truly sustainable cities of the future will not differentiate between waste and resource. Rather, they will understand waste as the starting point for something new. Ideas and initatitves are taking shape that provide a glimpse of how we could build our urban environments more sustainably in the future.