Observing that people change both physically and cognitively as they age, Posner suggests that each of us has, in succession, two separate selves - younger and

Exploding the myth that the United States is on the brink of gerontological disaster, this provocative and revealing book paints a surprisingly rich and unsenti

“A fascinating look at how scientists are working to help doctors treat the aging process itself, helping us all to lead longer, healthier lives.” —Sanjay

Between 1870 and 1940, life expectancy in the United States skyrocketed while the percentage of senior citizens age sixty-five and older more than doubled—a p