Current data shows that millions of people are affected: More than 2.2 billion do not have safe access to drinking water. At the same time, the Earth is losing huge amounts of freshwater - according to the World Bank, it amounts to 324,000 billion cubic meters annually. These figures may sound like they're from a disaster movie, but they are a bitter reality.
Metropolises such as Beijing, New York, and Rio de Janeiro are among the cities most at risk. Causes are not only climate extremes, but also rapidly increasing demand and poor resource management.