also, confronting the unthinkable. a teenage boy gets cancer, and his father discovers this remarkable source of help. first, under the microscope. a new treatment for depression. a fascinating story. a disease, as you know, that affects more people than coronary heart disease or cancer. good news is that in most cases, it is treatable. medication such as anti-depressants can be effective. in milder cases, cognitive behavioral therapy has been shown to work just as well. unfortunately, for many people, nothing seems to help. and that's why it's exciting to hear about a totally new approach that involves a device that looks like a pacemaker. two wires inserted directly under the brain, and then on the outside, a doctor can literally flip a switch. a pretty radical approach. in some cases, the results are astonishing. for as long as edie geiten can are. she could not get the sad thoughts out of her head. >> my mother used to say to me, smile, why don't you smile? and i would -- you know, give something like that maybe or just -- want is there to smile about? >> at 19, the first of three suicide attempts. >> for reasons that are inexplicable to me even now. got up and started playing with a razor. and -- >> you cut your wrists. both your wrists? >> yeah, uh-huh. >> over the next 40 years, she tried counseling, psychiatric drugs, and electroconvulsive shock therapy, but nothing worked. >> the despair, i think, is what is the most powerful push toward suicide. because it feels like there is no hope. >> but if you could look inside edie's head today, this is what you'd see. two electrodes, the thick not of angel hair pasta -- thickness of angel hair pasta, powered by a battery pack. >> i don't think about it, but i have electrodes in my brain. >> an experimental use of deep brain stimulation. what are we looking cincinnati pioneered by neurologists. the target is called area 25. a junction box for the brain circuits that control our moods. here at emery, where i'm on staff, my colleagues have been using deep brain stimulation for more than 15 years to treat movement disorders such as parkinson's disease. in that case, they're targeting the motor system. dr. mayberg wanted to use dds to target area 25 for patients with severe depression. it was a procedure just like this done on edie guyton. in surgery, patients are lightly sedated as a neurosurgeon drills two holes. with an instrument to guide him, he then inserts the electrodes. >> is the contact on? >> as a benchmark, the doctors asked edie to rate her feelings on a scale of one to ten starting with dread. >> my sense of dread is getting worse. >> getting worse. dread. >> two minutes later, they turned on one of the four contacts. >> how does it feel now? is it still hot? >> no. it's much less. >> what's the dread now is. >> three. >> a drop from eight to three. but doctors would soon get an even better result. >> we're going to make changes. >> up until this time, edie could not connect emotionally, not even with her baby grandniece, susan. >> and somebodied handed her to me -- somebody handed her to me, and i held her. i was going through the motions and felt nothing. >> nothing? >> nothing. nothing. >> that changed in the operating room. >> on, stim on -- >> when they tried contact number two. >> let me know if anything changes. just give a shout. >> i just almost smiled. >> you almost smiled? >> yeah. >> describe that for us, would you please. >> i didn't smile -- i haven't smiled before, like in a long time. or laughed. right there in that brain surgery, i felt feelings that i thought were gone. >> when you say you almost smiled, does d something strike you as funny or spontaneous? >> it was -- well, it actually -- i was thinking of playing with susan. i started thinking about susan. little susan. and i thought, i was holding her with her face to me. >> thwhat was that like to thina machine and electricity could transform your emotions like that? >> it felt fantastic. i didn't care what was doing it. it just felt right. spoon it in there -- >> since 2003, mayberg has studied 37 patients with about 2/3 showing significant improvement. >> looking good, huh? i don't feel good all the time. but this gives me the capacity that if i can, if there is joy in my life, i have the capacity to feel it. >> what exactly is dbs doing to the brain circuits? what do we and don't we know about how this works? >> to be brutally honest, we have no idea why this work. >> while the research continues to unlock the secrets of area 25 -- >> mama. >> it's been five good years for edie guyton. if you hadn't had the operation, where do you think you'd be right now? >> i really believe that -- that i would have committed suicide. >> i'll tell you, the difference in edie is amazing. this research is still in the early stages. so far it is encouraging. dr. mayberg has not seen any significant side effects. and it's exciting to be sure, but still years away from widespread use. still ahead, bill and melinda gates. they have a new plan to promote birth control. it's landed them in hot water with the catholic church. switch to citracal maximum plus d. it's the only calcium supplement that can be taken with or without food. that's why my doctor recommends citracal maximum. it's all about absorption. that's why my doctor recommends citracal maximum. how did the nba become the hottest league on the planet? by building on the cisco intelligent network they're able to serve up live video, and instant replays, creating fans from berlin to beijing. what can we help you build? nice shot kid. the nba around the world built by the only company that could. cisco. as part of a heart healthy diet. that's true. ...but you still have to go to the gym. ♪ the one and only, cheerios ♪ [ male announcer ] with 50 horsepower, dual overhead cams and fierce acceleration, the gator xuv 825i will shatter your expectations. ♪ and so no one gets left behind, check out our affordable xuv 550s at johndeere.com/gator. ♪ you may know the world population is expected to hit eight billion in over a decade. this week, population experts are going to debate in london on how to make sure this is a sustainable and healthy population. the international family planning summit is organized by the bill and melinda gates foundation and has gotten pushback, especially from the catholic church. the issue at hand, as you might guess, is birth control. in this battle for hearts and minds, melinda gate, a catholic herself, told me her side of the story. the foundation that she runs with her because, bill, is about solutions for the most serious global diseases -- aids, malaria, polio. what's next on the agenda for melinda gates? birth control. >> i think a lot of people may not know that i didn't, but with regard to the foundation's efforts, contraceptives was an earlier starting point than vaccines. >> it was. but you haven't really seen us go really big on this and say it's got to be one of the hallmarks of the foundation. we've always been doing some work on contraceptives all along. >> was there a moment where you said, okay, we have this here in the united states, but around the world they don't get to plan families the same way? >> a great discussion i had with a group of women in the slum outside of nairobi, literally the name translates to standing shoulder to shoulder. you can imagine what the slum is like. [ crying ] >> one woman summed up the conversation so beautifully. she said, i want to bring every good thing to my child before i have another one. and i thought, that's it. that's universal. that's what every woman cares about. >> what's the importance of this to the world? what's the importance of this to the economics of countries? >> if a woman can plan and space her children, it starts this virtuous economic cycle. you see it in country after country after country. all over the world. when you start that virtuous economic cycle, what we know is it ends up leading to healthy communities, healthy cities, and healthy nations. >> you're a practicing catholic. you've been very open about that. your own bishop in dallas had said basically said conception is sacred. and it's god's greatest gift. and artificial contraception violates the meaning of this gift. first of all, how do you wrestle with that? >> you have to be willing to speak your mind. i have to be able to say to me the contraceptive piece is not controversial. my roots, part of why i do what i do in the foundation, comes from that incredible social justice upbringing i had. this belief in that all lives, all lives have equal value. so we're not going to agree on everything, but that's okay. >> if you were meeting with the pope -- >> uh-huh. >> what would you tell him? >> i would tell him that i think this is right for all women. that if you believe in helping poor women, if you believe in children living and thriving, i think this is a necessary tool in this day and age. >> another charge from catholic bloggers -- that birth control amounts to population control. is this pop lagz control? >> no. and i think that's where we've gotten ourselves also in trouble on this issue. deciding about a family is a decision that needs to be made inside of a family. the population is coming down in countries where there's widespread access to contraceptives, but you've got to start at the bottom up. here we women say i can't find the means to feed this child. and if i have seven children, there's no way i can feed and keep alive seven children. i think somebody needs to give voice to that. and i think it's important that i do that. >> giving women access to contraception comes with a steep price tag. $4 billion. that's the estimate for providing family planning tools to 120 million women worldwide. it's gates' mission this month in london, getting world leaders to commit resources to this issue. did you talk about these issues with your kids? >> absolutely. we talk about these issues all the time. whether it's hiv/aids, family planning was just a big dinner table conversation -- >> is that right? >> yes. they're asking about the summit. what are you doing, mom, and why are you going to senegal? why is that important? why is this an important issue to you? >> so the discussion of the birds and bees in the gates household is a totally different -- you're talking about family planning at the global level. >> the global level. that's true. >> people will say, look, you're talking about contraception. could that increase premarital sex? could it increase promiscuity? do these conversations take place? >> we tell our kids to follow their conscience. i think about what would i counsel my own children to do. just -- to me, that guides me on what do i think is right for women around the world. >> how much of your time do you spend thinking about this? >> you say what's the thing that really i want to make sure is my lifetime's work at the foundation, it really is this family planning. >> that's quite something to say. given all the various things that the foundation does and that you have done personally, this is the one that you want to be remembered for. >> this is the one. ahead, he was a troubled 13-year-old boy when he finally found a home. he had parents and siblings who loved him and embraced him. charles daniel would live only three more years. it was enough time to change everything and everyone. tends . while a body in motion tends to stay in motion. staying active can actually ease arthritis symptoms. but if you have arthritis, staying active can be difficult. prescription celebrex can help relieve arthritis pain so your body can stay in motion. because just one 200mg celebrex a day can provide 24 hour relief for many with arthritis pain and inflammation. plus, in clinical studies, celebrex is proven to improve daily physical function so moving is easier. celebrex can be taken with or without food. and it's not a narcotic. you and your doctor should balance the benefits with the risks. all prescription nsaids, like celebrex, ibuprofen, naproxen, and meloxicam have the same cardiovascular warning. they all may increase the chance of heart attack or stroke, which can lead to death. this chance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods. nsaids, including celebrex, increase the chance of serious skin or allergic reactions or stomach and intestine problems, such as bleeding and ulcers, which can occur without warning and may cause death. patients also taking aspirin and the elderly are at increased risk for stomach bleeding and ulcers. do not take celebrex if you've had an asthma attack, hives, or other allergies to aspirin, nsaids or sulfonamides. get help right away if you have swelling of the face or throat, or trouble breathing. tell your doctor your medical history and find an arthritis treatment for you. visit celebrex.com and ask your doctor about celebrex. for a body in motion. in all the struggle over obamacare, a mostly charged fight was over the term death panels. i can tell you there was never such a thing in the law. it got us looking at the issue which is how do you care for patients at the end of life, what's needed and appropriate for them. it led us to a place i really never expected -- the george mark children's house in oakland, california. it's one of just three centers in the country where children with terminal illness can go with their families. >> when i was a kid, some of my favorite toys were broken toys. so you know, with the situation, i was not going to give him up for any reason no matter what. from what the doctors and nurses have taught us, it could be a couple hours, it could be a couple of days. you never know, especially with charles. he's shown superhuman abilities through all this. >> we adopted charles. i didn't have him, but i love him like he's mine. my cousin called us, collect, and he spoke to my husband and asked him if we could step in and take care of his children, because he wasn't able to do so being in jail. and so we told him, yeah. without a doubt. family is family and you always take care of family, no matter what. >> he would say, hello world, i'm charles. >> how y'all doing, i'm charles, charles daniels, yes, that's my name. ♪ i don't care what they say ♪ i'm in love with you >> yeah, he is the comedian of the family. that is our mr. brown. >> charles is a young man who has a brain tumor for which it is quite clear there is no cure. what we have been able to provide here is an environment where the kids can be totally themselves at the same time that they are able to participate in charles' final weeks and days. >> when we first found out they got the family together and told us what is going on. >> she told us very calm and told us that he was sick. and he had brain cancer. >> they told us that, you know, charles is dying, and we have to go somewhere, where, you know, it is nicer and beautiful for him, and we just don't want him passing in the house. with everything being said, we want him comfortable in a nice place. >> being here at george marks allows us and the entire family to be here together at all times. no visiting hours and none of that, and no restrictions. we are free to be with him any time of the day or the night. >> since like i'm the older brother, i feel like i need to be in there with him so when he wakes up, if he can still remember us, he knows i'm right there, and that i will always be right there with him. >> there's nothing that he can do about it. nothing we can do about it. we just have to be strong. >> i never thought that my kids would be as at teptitentive as are. it is not just my wife and i taking care of charles, but everybody. >> it hurts to have to see them go through it. it is hard. >> it is hard. >> we know it is the best for him, because he has fought a battle, and in the end, he is still going to win, because the cancer will die. the cancer will not win. >> he deserves a rest now. we are forever going to be changed, and he gave me something that, you know, most fathers and stuff don't get, you know. i'm going to carry it with me forever. >> dr. barbara beach who is a children's cancer specialist started the center after she treated a boy who died miserably at her hospital, because the insurance would not pay for a nurse at the home. not all of the patients there are terminally ill, but some are just recovering from illness and sickness. and next we will meet a boy who is riding across america to raise money for injured vets. o d that it relieved their headache fast. visit fastreliefchallenge.com today for a special trial offer. visit fastreliefchallenge.com an intense burning sensation i woke up with this horrible rash on my right side. like somebody had set it on fire. and the doctor said, cindie, you have shingles. he said, you had chickenpox when you were a little girl... i said, yes, i did. i don't think anybody ever thinks they're going to get shingles. but it happened to me. for more of the inside story, visit shinglesinfo.com did you know honey nut cheerios is america's favorite cereal? oh, you're good! hey, did you know that honey nut cheerios is... oh you too! ooh, hey america's favorite cereal is... honey nut cheerios ok then off to iceland! it is almost a 3,000 journey from the pacific coast to the atlantic and a ride that can take several days in aer ka, but imagine doing it on a bike and pedaling with only one leg. well, see for yourself. when did you know you wanted to be in the army and be a military person? >> my dad had fought in vietnam and my brother was a '94 west point graduate and i'm a '97 west point graduate and my younger brother is currently serving in the army. >> reporter: but it was not until he was hit by a roadside bomb when he realized how h dangerous war can be. three weeks later gabe woke up in a hospital bed recovering from many injuries and missing an entire right leg. >> i am laying there thinking, how much worse can this get? >> he spent time for sure feeling sorry for himself, but it was his 2-year-old daughter who snapped him out of it. >> it was my little girl who wanted to play with me and i said, no, daddy, i can't play on the floor. and she said under her breath, my daddy can't do anything, and i climbed out of that power chair and played legos on the floor with my daughter. >> since then he has just finished a relay bike race across the united states pedaling six hours a day with one leg. >> it is a neat ride, because you are going flu the rural parts of america and to me that is the heartland. >> the ride was grueling, but yet for gabe it was more than finishing. >> it could be dramatic like the setback i had when i was hurt in iraq, but the important thing is that you find a new normal and go forward from wherever you are and do the very best with the things that god has given you. >> now, if you are still celebrating the fourth of july this weekend, you are in luck. the chase life tip to remember as you are firing up the grill, remember this, don't char the meat. when the meats are cooked at high temperatures, they develop chemicals that are called carcinogen carcinogens that can cause cancer. so when you sea see the meat is off cooked thoroughly, take it awe of the grill. use a meat thermometer, but be mindful not to get to the