(NEXSTAR) – The U.S. may have fallen off the list of the happiest countries for the first time this year but that doesn’t mean there aren’t pockets of happy folks across the nation. In fact, 10 U.S. cities recently ranked among the happiest cities in the world. Researchers with the Institute for Quality of Life, a London-based organization, recently released its latest ‘Happy City Index’ of the 250 happiest cities in the world. They analyzed various “indicators…that directly relate to the quality of life and the sense of happiness of its residents.” Cities needed to have at least 300,000 inhabitants,...