At the beginning of 2023, the World Population Review released its 2022 Quality of Life index which ranked over 10,000 cities according to a set of criteria. From their survey, they concluded that the standard of living had been declining in major cities across the globe. Due to the high levels of air pollution and increasing population density, numerous countries were ranked poorly. With Zürich, Switzerland, ranking the highest, they unintentionally set an example for the rest of the countries to follow.