dr. art kaplan is a bioeth cyst. he is the head of the nyulangon medical elth ifex division. dr. harvath, i want to speak with you. you have spoken about a fountain of youth since ponce de leon went searching. we know you studied 8,000 samples of more than 4,000 cancerous cells and tissues. give us a shot in layman's terms here what exactly did you find? >> well, i found a biological clock that allows one to estimate the ages of many tissues and cell types in organs in the human body. and this new aging clock is based on certain markers on the dna, and by averaging these 353 markers, one can arrive at a highly accurate estimate of human age. >> so you can actually see what the dna, what age the dna should have. you can see where some were older and some were younger? >> yes. exactly. this is, of course, a very interesting application to estimate the age of various different regions from the same individual and then identify certain tissues or organs that either look substantially older or younger based upon their chronological age. >> i want to talk about what you younger. i also

dr. kaplan, we appreciate your time today. we appreciate it. >>> armed with a mission that no one goes hungry. a program in india that brings a military-style of bringing more to rice fields. >> these cadets are getting ready to now the fields of the south indian state of kerela. armed with practical skills and technical know how they'll soon join their comrades in helping the local agriculture industry. this is kerela's push to sel self-sufficiency. >> we're highly disciplined, highly committed, and committed to hard work. >> reporter: new recruits spend 20 days learning about everything from fertilizer to seeds to planting seasons and machinery. since the first session in 2003 more than 3,500 cadets known to their communities as service providers have been through this training. over the past 40 years the state of kerela has seen a steady decline in the number of people willing to work in the field. but the food security army is trying to lure people back to the land. it's mission is to start a national movement to make sure

dr. arthur kaplan says the idea of bidding on internet may sound great to some people, but cheaper in medicineod. >> we have more information when we buy a car at an auction than we do when we buy a surgeon at an auction. >> reporter: but perry hunt says he's happy. he's got a new hip and he saved $50,000. news, houston. >>> he is an assistant professor of surgery at john hopkins and author of unaccountable, what hospitals won't tell you and how transparency can revolutionize health care. good to see you. that's a lot of money to save. i'm kweworried about the qualit side. >> it's one of the places where you can't get a bid on the service. people are saying we want more free market with price transparency and there's demand for that out there. if you're paying more, maybe you're getting more quality but people are hungry for price transparency out there in some fraction of the health care market. >> the expression is you get what you pay for. i'm okay with that when i'm shopping for a car or a vacation or something. i'm not sure i'm okay with that when i'm shopping for surgery. >> one thing th