Cities are home to more than half of the world’s population, consume two-thirds of the world’s energy, and produce 70% of global greenhouse gas emissions. And this trend will only continue: by 2050, 66% of the 10 billion people living on earth will be urban dwellers.
As we mark World Habitat Day, these numbers remind us of a serious fact: while rapid urbanization brings tremendous opportunities for growth and prosperity, it has also posed unprecedented challenges
to our cities—and the people who live in them.
Chief among these challenges is meeting fast-growing demand for infrastructure and basic services such as affordable housing and well-connected transport systems, as well as jobs—especially for the nearly one billion urban poor who are disproportionately affected by climate change and adverse socioeconomic conditions.