Every Christmas when I was a child my grandmother would make her famous baby back ribs. Christmas was not Christmas until these fall-off-the-bone, magical ribs had been marinated, slow cooked, served and devoured. After Christmas was over, we would fly back to California and attempt...

Recent studies have confirmed that the brain can heal and preserve itself—or even improve its functioning—as we get older. For some time, many scientists have tended to think of our brains as machines, most commonly as computers, destined to break down over time under the...