ann curry takes us around the world to witness up close our changing climate. >>> from nbc news world headquarters in new york, this is nbc nightly news with lester holt. >>> good evening. australian search coordinators say they are taking seriously what may be underwater signals now picked up by two ships hunting for the black boxes from malaysian air flight 370. officials are warning caution saying it is too early to determine if indeed they are coming from the plane's wreckage especially since they were heard in different parts of the ocean. a third sound was recorded by an australian ship operating more than 300 miles away. in a now month-old search that has seen more than its share of false leads, officials in charge are holding their breath hoping one of those sounds will finally lead them to the ill-fated plane. we start with ian williams. >> reporter: it's dawn now here in perth and the search is getting under way again with renewed intensity but time is running out for finding the black boxes. in the remote indian ocean, searchers are now chasing two leads to find the black b

it's a subject ann curry has reported on for us over the years as part of our team.nd tonight she reports on an extraordinary teenager who has overcome great obstacles in her own life and is now determined to help others who find themselves in a position she knows all too well. tonight ann curry tells us how this teenager is making a difference. >> reporter: if you've ever questioned the value of a penny, you need to meet chandra starr who's found a way to turn all this zinc and copper into the equivalent of gold. organic fresh produce for the homeless and hungry in glenwood springs, colorado. >> there you go. >> thank you. >> reporter: 13 years old, in junior high, helping the needy is an accomplishment. but that is only where chandra's story begins. seven years ago chandra was one of them, hungry and homeless, for a time living in a tent in the mountains with her mother, kim. what do you really remember about being here when you were so small? >> just the cold nights and snuggling up with my mom. >> reporter: i'm trying to imagine what this must have been like for

that's amazing. >> reporter: ann curry, nbc news. >> that's our broadcast on a wednesday night. thank you for being here with us. i'm brian williams, we of course, hope to see you back here tomorrow evening. good night. >>> nbc bay area news starts now. >>> literally spewing out water for three weeks. >> a new problem with leaking water as the state of california struggles through a drought. i'm jessica aguirre. >> and i'm raj mathai. it's not just one or two water leaks. it's widespread. nbc bay area has uncovered that pipes are leaking across the city of san jose, and workers are having trouble keeping up with the demand. we showed you this last night. it has been leaking for two days and turned the street into a soggy mess. >> reporter: what it really comes down to is water down the drain in the middle of a drought. water crews were out here to repair this leak on rosewood avenue. but they still have more leaks to repair. some residents tell me they have waited for more than three weeks before crews showed up. >> it was literally like a little geyser. >> reporter: she says fo

reasons maybe it's not as big a story as it might have been five years ago or when ann curry left the there was more angst and more tears shed when ann left. it appeared in that instance that matt lauer rightly or wrongly, a lot of people thought matt had something to do with it. in the case of abc, it appears that josh thought he was worth more money than abc was prepared to pay. abc said this is our best offer and we feel very confident that it's a great offer for you. josh and his team felt otherwise. he left of his own accord. it's not a situation where people can say, this guy was being pushed out. he made a business decision, nbc made a business decision in bringing him in. let me ask you a question. do you think it's a "today" show decision? >> well, you know, you're putting me on the spot mere. i don't think josh elliott's just going to nbc for nbc sports. i think initially the negotiations were about news and sports, then they just talked about sports for a while because the "today" show has to appear not to be forcing somebody out. they had that terrible mistake with ann cur

we wanted to let you know ann curry has spent a year putting together a documentary on the effects of climate change, how the experts say the effects are already being felt across the globe. it airs sunday night, 7:00/6:00 central here on nbc. we're back in a moment with a big debate over an iconic piece of american history. >>> yet another emotional day in boston after the year they've had. marathon bombing survivors delivered the world series rings to the red sox at their home opener at fenway. boston royalty was on hand. pedro martinez and the former mayor tom menino. and a boston firefighter took this photo of the tribute before the game for the two firefighters killed in the back bay fire a week ago. >>> nasa's incredible cassini spacecraft way out there in the wild blue yonder of space has discovered what appears to be water the size and depth of lake superior beneath the frozen surface on one of saturn's moons. cassini first sent back photos of water vapor above the surface of that moon back in '05. it has since zoomed in for a closer look. >>> if you have flown into new york,

ann curry takes us around the world to witness up close our changing climate. >>> from nbc

ann curry with tonight's report about a young woman's inspiring effort to pay it forward in life. "nightly news" begins now. >> announcer: from nbc news world headquarters in new york, this is "nbc nightly news" with brian williams.

ann curry takes a look. >> reporter: for the last year and a half, it seems mother nature has thrown everything at us. >> look at the cold air that is surging into the upper midwest. >> reporter: a bone-chilling deep freeze, searing heat, drought and fire, floods gushing through the u.s., europe and asia. and superstorms devastating entire regions. what on earth is going on? for more than a year, we traveled the far corners of our planet searching for answers to what's causing these weather extremes. >> this is the storm of the century. >> reporter: we met ordinary people who have seen changes up close and asked some of the world's brightest scientists, is the weird weather a coincidence or a sign that fundamental change is here? >> the planet is not just changing, it's changed. >> reporter: just this past week, an influential group of the world's climate scientists named the intergovernmental panel on climate change, issued a groundbreaking report, saying climate change is already sweeping all the continents and oceans of our planet. their position, there is no doubt the planet is g

don't forget tonight on nbc, ann curry hosts a special documentary about climate change "a year of extremesate change just hit home." on topic there. coming up, michael lewis the author of "money ball" on his new book and whether wall street is stacked against the little guy. it's created quite a buzz. >> "meet the press" is brought to you by ge. we imagine a better world. t ♪ ♪ [ girl ] my mom, she makes underwater fans that are powered by the moon. ♪ [ birds squawking ] my mom makes airplane engines that can talk. [ birds squawking ] ♪ my mom makes hospitals you can hold in your hand. ♪ my mom can print amazing things right from her computer. [ whirring ] [ train whistle blows ] my mom makes trains that are friends with trees. [ train whistle blows ] ♪ my mom works at ge. ♪ you stand behind what you say. there's a saying around here, my mom works at ge. around here you don't make excuses. you make commitments. and when you can't live up to them, you own up, and make it right. some people think the kind of accountability that thrives on so many streets in this country has gone missing in t

don't forget tonight on nbc, ann curry hosts a special documentary about climate change "a year of extremesdid climate change just hit home." on topic there. coming up, michael lewis the author of "money ball" on his new book and whether wall street is stacked against the little guy. it's created quite a buzz. >> "meet the press" is brought to you by ge. >> "meet the press" is brought to you [ female announcer ] take skincare to the next level with roc multi correxion 5 in 1. hydrate dryness, illuminate dullness, lift sagging, diminish the look of dark spots, and smooth the appearance of wrinkles. roc® multi correxion 5 in 1. high performance skincare™. now for a flawless look, roc perfecting cream. the only bb cream with the wrinkle fighting power of roc retinol. new from roc. >>> here now some of this week's images to remember. >>> we are back in a moment here with michael lewis. he's here to talk about two of i procrastinated on... buying a car because i knew... it would be a scary process. truecar made it very easy... for me to negotiate, because i didn't really need to do any negotiati

don't forget tonight on nbc, ann curry hosts a special documentary about climate change "a year of extremesclimate change just hit home." on topic there. coming up, michael lewis the author of "money ball" on his new book and whether wall street is stacked against the little guy. it's created quite a buzz. >> "meet the press" is brought to you by ge. we imagine a better wo [ thunder crashes ] [ female announcer ] some people like to pretend a flood could never happen to them. and that their homeowners insurance protects them. [ thunder crashes ] it doesn't. stop pretending. only flood insurance covers floods. ♪ visit floodsmart.gov/pretend to learn your risk. your chance to watch full seasons of tv's hottest shows for free with xfinity on demand. there's romance, face slaps, whatever that is, pirates, helicopters, pirate-copters... argh! hmm. it's so huge, it's being broadcast on mars. heroes...bad guys... asteroids. available only on mars. there's watching. then there's watchathoning. ♪ >>> here now some of this week's images to remember. >>> we are back in a moment here with michael lewis

don't forget tonight on nbc, ann curry hosts a special documentary about climate change "a year of extremese change just hit home?" on topic there. >>> coming up, michael lewis the author of "moneyball" on his new book and whether wall street is stacked against the little guy. it's created quite a buzz. and we'll talk about it. in jel, impact life expectancy in the u.s., real estate in hong kong, and the optics industry in germany? at t. rowe price, we understand the connections of a complex, global economy. it's just one reason over 75% of our mutual funds beat their 10-year lipper average. t. rowe price. invest with confidence. request a prospectus or summary prospectus with investment information, risks, fees and expenses to read and consider carefully before investing. with investment information, risks, fees and expenses peace of mind is important when so we provide it services you bucan rely on. with centurylink as your trusted it partner, you'll experience reliable uptime for the network and services you depend on. multi-layered security solutions keep your information safe, and secu

here's nbc's anne curry. >> reporter: little allah na simon was 12 sen he was diagnosed with a rare cancertice. >> reporter: it mostly strikes young people. >> i found it scary through five years, the chances of survival are actually pretty slim. >> reporter: now, after surgery, doctors say her cancer is gone, but if some ways, it never fully left her. >> it's a part of who i am. >> reporter: at 16, allah na began searching for a cure, with the help of her father sandy, a biophysicist at rockefeller university and a small team of researchers. >> this was annich she had to go after. >> reporter: allah na had an idea, what if she used young people's dna, cleaner than adult, with mutation being visibility. >> here we have a protein highlighted in green. >> reporter: after lifting samples from 15 patients, the new york genome centers found all shared the same mutation. >> this is a possible root towards a treatment and certainly towards a diagnosis. >> reporter: allah na co-authored a paper with her findings published in the journal of science, an achievement that doesn't surprise her parents

it's change. >> and you can watch ann curry reports, our year of extremes. conversation online. >>> the restaurant at the center of a lawsuit against paula deen closed its doors. former manager at uncle bubba's oyster house in savannah georgia, accused her of using racial slurs. she co-owns the restaurant with her brother. the closing was announced on thursday. the controversy and her admission that she had used the n word caused business partners to sever ties. the search will soon be on to find a replacement for the late show host david letterman. he surprised viewers thursday by announces he'll retire sometime next year. he's of 66 and spent more than two decades at the late show desk. before that he hosted the late night program doing stupid human tricks long before they were a staple of the internet. >>> britain's prince harry was a good sport as he returned to the sight of the summer olympic games in london. he toured a section of the olympic venue that reopens as a public park this weekend. this is harry's first public event since returning from a rom