America’s partisan divides are getting deeper. That means there’s a wider gap between what young progressives and young conservatives think. And that’s playing out in the dating world, where politics have increasingly become a relationship deal-breaker. Eighty-six percent of Americans think it...

Our bones are constantly breaking down and remaking themselves. In fact, an adult human skeleton replaces itself every five to 10 years. As we get older, that creation of new bone can’t keep up with the loss of old bone. Our bones get weaker and more brittle, a condition called osteoporosis, and...