Our recent study aimed to determine the threat climate change poses to the city’s more than 8 million residents.
One reason to keep an eye on Rio after the World Cup? A new initiative to provide freshwater security for its people.
Forests store fresh water cities depend on — and keep it from descending on them all at once.
Mexico’s “Water Forest” provides water for 23 million people in one of the world’s largest metropolitan areas.
Cities cover only 2% of the Earth’s surface but use up to 75% of its resources.