dr. elizabeth blackburn about her groundbreaking research that explains the science of aging. then director danny boyle joins us to talk about the sequel to his seminal indy film "trainspotting." it's rolling into u.s. theaters this weekend. we're glad you've joined us. those conversations in a moment. ♪ >> and by contributions to your pbs station from viewers like you. thank you. ♪ >>> dr. elizabeth blackburn is a nobel prize-winning molecular biologist who discovered one of the greatest secrets -- how to slow down the aging process -- now i got your attention, don't i? the new book is called "the telorere effect: a revolutionary approach to living younger, healthier, longer". dr. blackburn, an honor to have you on this program. >> thank you, tavis. >> i did pronounce it correct, telomere? break it down for me. >> perfect. look at your shoes. you've got shoelaces. tips at the ends of the shoelaces protect them from fraying away. >> the little plastic things. the tip of my shoelace, i'm looking at it right now. that's not a telomere is it? >> it's like -- if you think of a sho

dr. elizabeth blackburn about her groundbreaking research that explains the science of aging.or danny boyle joins us to talk about the sequel to his seminal indy film "trainspotting." it's rolling into u.s. theaters this weekend. we're glad you've joined us. those conversations in a moment. ♪

. >> reporter: doctor elizabeth blackburn won the nobel prize in medicine for her work in tilomirs. she and dr. alyssa apell have compiled all the scientific data into a new book called the tilomir effect. you don't need a test. just good information. >> people find it hopeful and empowering. there are so many different things we can do. >> reporter: by making changes you can begin to lengthen them in as little as a few months. jimmy is already coming up with ideas. >> get more sleep. more positive outlook. take a vacation. [ laughter ] >> wake up and you say go. >> reporter: she does. >> reporter: in san francisco, juliette goodrich, kpix5. >> the test costs $89. i'm feeling older already. [ laughter ] you get your results in the mail four to six weeks after the lab gets your sample. >> i think we should all take the test. the weather is making us younger. >> yes. stress levels decreasing as the rain, the flooding is going away. thankfully not coming back for that while. it is mild tore night. san francisco, 51 degrees. oakland, 49. biggest change is concord. 39 last night. this evening clear