By Barbara Haig Sharon Jones & the Dap-Kings may croon about 100 days and 100 nights, but a growing number of people are singing a sweeter song – 100 years. According to United Nations estimates, the world was home to nearly half a million centenarians (people age 100 and older) in 2015, more than four times as many as in 1990. And projections say there will be … [Read more...] about At 100: Independent and going strong