I don't watch much TV, and when I do, I rarely pay attention to commercials. But a new ad caught my eye the other day: in it, a middle-aged accountant talks frankly about his passion for his work. Numbers, he says, just come naturally to him, and he feels like his brain is firing on all cylinders when he's working at something he loves. Then, the CEO of AARP walks into the frame and announces a new websitefeaturing quizzes, games, and other applications designed to promote the brain health of older Americans.
