The Demographic Issue

Today, there are more than 7 billion people on Earth. By 2050, there could be 9.7 billion, and 10.9 billion by 2100. At the forefront of this rapid demographic expansion are our cities, where more than half of humanity now lives.

The largest are even referred to as "global cities". Here's a review of the situation and solutions for living in the city of the future, to avoid suffocation.