How much of the world’s population live in urban areas?

In recent decades, hundreds of millions of people have moved from rural areas to cities, home to more than half the world’s population._x000D_

How many people are exposed to Deadly city heat?

_x000D_In a study published in the Oct. 12, 2021, edition of the journal PNAS and a postdoctoral researcher at Columbia University’s Earth Institute, scientists discovered that exposure to deadly urban heat has tripled since the 1980s and now affects nearly a quarter of the world’s population. The effect is caused by rising temperatures and growing numbers of people living in urban areas.