her new album features cover songs from radiohead to nina simone. glad you could join us. >> every community has a martin luther king boulevard. it is the cornerstone we all know. it is not just a street or a boulevard, but the place where walmart stands together with your community to make every day better. p helenifhapp help happens in neighborhoods. learn more. >> and by contributions to your pbs station from viewers like you. thank you. captioned by the national captioning institute --www.ncicap.org-- >> dr. mark hyman is a family physician and best-selling author, whose latest text is one of the most talked-about books on the subject of health and weight loss. it is called "the blood sugar solution -- the alta health the program for losing weight and feeling great now." the book sits atop "the new york times" best-selling lists at number 1. what you make of the fact that this country is so obsessed with weight loss? i say weight loss as opposed to dieting. obsessed with weight loss, as evidenced by the fact these books continue to sell. what yo