Fresh Air with Terry Gross

Audra McDonald has starred in stage classics and on TV, where she played a leading role on the ABC drama Private Practice for four seasons. But the actress might be better known for her stunning voice and for her performances in the Broadway productions of Carousel, Master Class and Ragtime, which helped her rack up three Tony Awards before the age of 30. She won a fourth Tony for her performance in A Raisin in the Sun, putting her in the company of Broadway greats Gwen Verdon and Mary Martin.

Johnny Carson walked away from The Tonight Show, after 30 years at the top of the late-night ratings, of his own volition. And except for a few fleeting TV appearances after he retired, he never looked back — and never went back. When filmmaker Peter Jones would send an annual letter to Carson, asking for his cooperation in a TV biography of him, the answer was always no. One year, Carson went so far as to explain why: Let the work, he said, speak for itself.

The numbers are staggering: One-third of Americans are obese; another third are overweight. Some 26 million Americans have Type 2 diabetes. An additional 79 million more are pre-diabetic. Thanks to these figures, the children of today have a good chance of becoming the first generation of Americans to die at younger ages than their parents.