One of us will celebrate a 150th birthday

Our money's on Keith Richards. Given recent advances in health, technology, and medicine and the rise of genome science, it's only a matter of time until someone gets to blow out all those candles—especially if you toss in a breakthrough on the scale of antibiotics, says David Ewing Duncan, author of When I'm 164. What are your odds of living to see our predictions come true? There are more than 300,000 centenarians on the globe already—and one hearty soul has reached the age of 122