increasing. it predict said farmers incomes will extend the worst slide in g generations. as a result more farms are expected to close on top of the

140,000 that have closed or consolidated in the last nine years. >> it's one of our hay meadows, it's owned by my grandma. >> reporter: in pottawatomie county, kansas, 34-year-old matt and his younger brother, tim, are also fifth generation farmers. >> you have guys my age that are trying to raise a family, trying to farm, and having to work in town, just to produce cheap food for the country. it's a crisis. >> reporter: they say they spent $34,000 last year farming wheat and other crops, but they only brought in $35,000. so they may have found a solution. they now sell cattle and cut out the middle man. when these cattle go to slaughter they might make $1,000 a head, but if they slaughter, process, and sell directly to the consumer themselves, each head would be worth $2,100. with an uncertain future, those like don teske can only hope the family farm will survive. >> we're going to lose another generation of farmers through this, and that's sad. >> reporter: david begnaud, cbs

news, pottawatomie county, kansas. >> pelley: tonight, iraqi forces are holding the runway at the mosul airport. it is a major advance in the liberation of iraq's second largest city from the grip of isis. david martin is in iraq tonight with a rare look at how u.s. forces are helping. >> reporter: after suffering 500 killed and 3,000 wounded in liberating the eastern half of mosul from isis, iraqi forces met only light resistance as they advanced through the outskirts of west mosul. despite the early success, the iraqis are expecting west mosul to be an even tougher fight once they enter the city. american advisers are with them. general joseph votel, commander of u.s. forces in the middle east, told his troops, "this is the iraqis' fight." >> would it go faster if we did it ourselves? well, it might. but i'm pretty convinced the way we are approaching this, this campaign this time, working through our partners, is kind of the right way of doing it.

they own this. we are helping them-- helping them to fight, but we're not doing the fighting for them. >> reporter: votel was at an airbase whose location we are not allowed to name for security reasons. the aircraft here and at other bases which ring iraq and syria are, dropping a slow, steady rain of bombs on isis. these are 2,000-pound bombs, and over here are 500-pound bombs about to be loaded on an f-15 aircraft. there is now a bomb falling on northern iraq and eastern syria once every eight minutes. that's not counting 1,400 rounds fired by these rocket launchers, which the army calls "himars." accurate up to nine feet. do you know what your success rate is? >> the himars, it does not miss, sir. we tell it what to shoot, it will hit that target. >> reporter: with all that firepower, it's only a matter of time between mosul and raqqa are liberated.

but that's been the history of u.s. military operations since 9/11-- win all the battles without ever winning the war against trump. scott. >> pelley: david martin on the battlefield. david, thank you. we have an update now on dr. jon lapook's "60 minutes" story about the sports medicine doctor charged with sexually assaulting nine women gymnasts. today in michigan, larry nassar pleaded not guilty to 22 criminal counts. dozens of former athletes are suing him in civil court. coming up next on the "cbs evening news," a young murder victim may have recorded her make the most of a few minutes

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♪ i'm goin' up the country, baby don't you wanna go? ♪ geico motorcycle, great rates for great rides. >> pelley: there was a break today in a cold case in georgia. 33-year-old ryan alexander duke was arrested and charged with murder after investigators received a tip linking him to a former high school teacher and beauty queen, tara grinstead. duke was a student at the school where grinstead taught. she disappeared 11 years ago. her remains have never been found. police in indiana hope a mysterious recording will lead them to the killer of two young hikers. don dahler is there. >> reporter: on this abandoned railroad trestle, a 14-year-old girl may have recorded the voice of her killer. >> down the hill.

down the hill. >> reporter: liberty german and her 13-year-old friend abigail williams were hiking on february 13, when police say german captured images of this man, and also made a longer recording of their encounter. police haven't said if the voice recording is of the same man. indiana state police sergeant tony slocum: >> this young lady is a hero. there's no doubt. to have enough presence of mind to activate the video system on her cell phone, to record what we believe is-- is criminal behavior that is about to occur. >> reporter: over 100 local, state, and federal agents are working the case, including carol county sheriff tobe leazenby, who has been with the department for 30 years. he's counting on the public to recognize the suspect soon. >> we're hoping that someone out there will say, "oh, my goodness. that's-- you know-- that's a cousin. that's an uncle. that's the guy next door."

>> reporter: but despite the fact that delphi is a small community, no one has yet come forward. >> it's surprising and also frustration as well. >> reporter: reward money for the case has reached $50,000 and climbing. you have had some of the people who live here express fear. >> yes. >> reporter: and i imagine they're hurting. >> yes. >> reporter: what do you tell them? >> the bottom line, that i've been sharing all week, is we will get this, and we will find who is responsible. >> reporter: authorities have not released the full video that liberty german shot while she was here, nor anything else that was on her cell phone, because they're holding that back for eventual prosecution. but, scott, even with just those still frames and that small ♪living well rise above joint discomfort with move free ultra's triple action joint support for improved mobility and flexibility, and 20% better comfort from one tiny, mighty pill... get move free ultra, and enjoy living well.

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pelley: the protest camp near the dakota access pipeline was cleared out today. protesters set up the camp last august to block the pipeline from being finished near the standing rock indian reservation. tribes say it threatens their drinking water and cultural sites. an executive action from president trump helped clear the way for the pipeline's completion. radio and tv commentator alan colmes died today after a brief illness.

colmes was best known as the mild-mannered liberal recipient of sean hannity's conservative fire on the fox news channel. when people asked colmes why he didn't fight fire with fire, he responded, "you fight fire with water." alan colmes was 66. in syracuse, new york, march madness came early as john gillon heaved a desperation bomb last night at the buzzer. >> gillon! >> pelley: the fans stormed the court. the win over duke gives syracuse a shot at making the big tournament next month. duke is all but guaranteed a spot. up next, how a photographer scored the biggest job of a lifetime. ,,,,,,,,,,,,,,,,

>> pelley: we end tonight with a view of america through the lens of a trailblazing photographer. michelle miller has his pictures and his story. >> i love you, man. >> i love you, too. >> wonderful! >> reporter: at a recent book signing in harlem, the personal vision of 80-year-old photographer adger cowans was on full display. >> i never had a book of my work before. >> reporter: for cowans it started in rural ohio, growing up in the midst of the great depression. in 1958, he became one of the first african americans to earn a degree in photography from ohio state. he decided to write a letter to the only black photographer he'd ever heard of, gordon parks, whose images of the jim crow south made him world famous. >> he said, "you can live here with me and my family and you

can work with me at 'life' magazine." >> reporter: he would work with parks for two years before pointing his own lens at everyday life. cowans said it took more emotion than skill. >> i feel. that's what i do, when i take a picture, i feel it. when you get that rush or you get that feeling inside, i know i have it. i felt it. >> reporter: by the mid-60s, he was capturing celebrities like dizzy gillespie, sammy davis, sarah vaughn, and mick jagger. >> take it easy! >> reporter: but it would be on movie sets like "on golden pond" where cowans would make history, becoming the first african american hollywood still photographer. what reaction did you get? >> first of all, when they saw me, they assumed that i was there to deliver something. ( laughs ) "what's this black guy doing here? there's nobody else black on the set." >> reporter: he has worked on more than 30 films, and even at

80, he's still expanding his craft. what does your huge book of talent say about you and what you've meant? >> i don't think like that. spirit touches me, and something comes out. it belongs to the world. it doesn't belong to me. >> reporter: and now everyone can have their own copy. >> how do you spell that? >> reporter: michelle miller, cbs news, new york. >> pelley: and that's the "cbs overnight news for this friday. from the broadcast center at new york city, i'm scott pelley.

this is the cbs overnight news. i'm jurekau duncan. more are feeling from angry voters at packed town halls. many are on recess but for many it hasn't felt like a break. passionate crowds including republicans and democrats are demanding answers about president trump's policies and president trump himself. >> reporter: at groever tee's barbecue, congressman matt gae

tz, mr. trump was also a prime topic in new jersey. home to republican congressman. l leonard lance. >> i'd like to know what you plan to do when he makes delusional statements. >> i believe the president has not spokeen the truth. i will indicate my point of view. >> reporter: the question for republicans this week, how strongly to defend the president when they're already dealing with democratic anger over plans to repeal obama care. protesters gathered outside congressman dave riekert's washington state office today. >> you work for us. and laid into arkansas senator, tom cotton last night. >> my husband was dementiaall l

alzheimer's and you want to stand there with him and expect us to be calm. cool, and collective. well, what kind of insurance do you have? >> reporter: but the uprisings from coast to coast have not swayed republicans when it comes to a top gop priority. >> i will fight with every fiber of my being toobamacare in the year 2017. >> reporter: and he faces protests over transgender students and bathrooms. major garret has that story. >> reporter: this reversal is designed to put the debate and search for solutions in the hands of states and local school district. critics say this will create confusion and could open the door to discrimination and

possibly bullying. protesters formed outside the white house as the decision to end federal protections put president trump front and center over the battle for lgbt rights. the had white house said policy regarding transgender bathrooms should be decided at the state level. press secretary sean spicer reiterated that. the move wipes out the obama's administration allowing them to use restrooms that match their gender identity. those that didn't comply would lose their funding. >> we should help them so they're not in a vulnerable positi position. >> reporter: he says his had justice department has a duty to face the law. last march north carolina enacted a law restricting access

to bathrooms to the sex that appears on a person's birth certificate and candidate trump criticized north carolina's move and said he would allow caitlyn jenner to use any bathroom she wished in trump tower. >> so if caitlyn jenner would want to walk in to trump tower, you would be fine using any bathroom she chooses? >> that's correct. >> reporter: but he said later that night -- >> the federal government should not be involved. >> reporter: the white house says education secretary is 100% on board in this reversal in federal policy. saying in part students should have the freed toom to learn an thrive. no individual, school, district or state can abdicate. the fbi is now looking into the murder of two teen age girls

in indiana. they believe a chilling recording could help lead them to the killer. delify, indiana. >> reporter: the girls were last seen alive the day before valentine's day hiking on this abandoned trail. now investigators don't appear any closer to find out who murdered them. they're pleading with the public for any tips, even those that might seem insif can't. listen to this voice. police think it belongs to a killer. the looped audio is shot by 14-year-old liberty german who was murdered along with her friend, 13-year-old abigail williams. >> 14-year-old young lady who had the presence of mind when she probably felt like she was in danger to activate the video

system on her cell phone and record evidence we're using now. >> these grainy images are also from german's ophone. investigators don't know if the voice recording is of the same man. >> as poor as this picture is, somebody knows. >> reporter: about 20 fbi agents are working with state and local police to solve the case. directorer comey himself has been briefed twice. they want to know about anyone who has been behaving strangely in the past week. anxious, irritable, have they followed this case with a sense that is not normal? >> reporter: german reportedly posted these photos on february 13th. when the girls failed to return, the town of about 3,000 launched a search. their bodies were found about a half mile away on property owned

boy ron logan. >> this is the first as far as i know. >> reporter: german's grandfather said she had dreams of becoming a scientist. >> involved in every sport you could play. may liberty and abigail rest in peace. >> reporter: there is a $44 $41 reward. the cbs overnight news will be right back.

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one of america's most popular bulk action rifle is the responsible for thousands of complaints. the company has down played the danger for decades. now an aved hunter and gun lover is on mission to raise awareness after a tragedy. >> i have become so accustomed to unpleasant thoughts and hardships. so that has become my new normal. >> one of his sons is dead and the other is in prison. >> pain is my constant friend.

>> reporter: roger a powerline construction foreman owned a remington semiautomatic rifle and bought one for his then 12-year-old son, zach. >> we loved the one that i had and he was old enough and mature enough. >> reporter: and how much was the safety stressed? >> paramount. >> reporter: but one night in 2011 the two boys, zach and justin home alone got into a fight. zach then 15 got his remington 700. >> i loaded it. i loaded it with the purpose of scaring him. >> reporter: you knew you weren't supposed to load. >> yes, ma'am. i had been taught better. >> reporter: eventually emotions started to calm down. >> i bent at the waist and started up and heard a click like it went off.

i remember the fire leaping from the barrel. i remember seeing it hit. it was just half his head was gone. >> reporter: panicking, he went and got justin's gun and placed it between his brother's legs to make it appear as though he shot himself. then zach called his parents. >> he said daddy, don't go in there. and i just pushed him aside and came on in and it was really obvious -- >> reporter: it was right here too. >> right there. >> reporter: detectives suspected right away that this wasn't self inflicted. zach was arrested the day of justin's funeral and later confessed that it was his gun

but insisted it went off by itself. >> i didn't know how it went off. >> reporter: did you deliberately kill your baby brother? >> no, ma'am. >> reporter: did you pull the trigger? >> no, ma'am. >> reporter: but zach was convicted and sent off to prison for 10 years. >> reporter: is it true you testified against him at trial? >> yes. i t made no sense. >> reporter: but by then remington had gotten some 200 complaints about rifles like zach's with a triggerer mechanism called the x-mark pro. six months after justin was killed, another tragedy with the same trigger. this time in chad born, north carolina. 16-year-old jasmine and her cousin were about to go christmas shopping. >> they were standing in the

front yard with their grandmother on the porch. >> reporter: an attorney for jasmine's family made this animation. a neighbor across the street in his bedroom picked up a loaded model 700. the safety was off pch. >> and it fired through a closed window and what could be the most random act you ever heard of it travelled across the street and went through her chest and hit jasmine in the heart and she died in her grandma's front yard. >> reporter: in a deposition under oath james anthony blackwell, an experienced marine and hunter couldn't explain how his rifle went off. >> do you think you touched it in any way? >> no, sir. >> reporter: was he prosecuted? >> no. >> reporter: chafen had already

w won money for a client who shot himself in the foot when he said his 700 fired on its own. back then they were made with a trigger called "the walker." they faced lawsuits alleging to injury or death but argus it's always human errorer and never the gun's fault. >> you cannot admit wrong doing when you have 7 million of these things on the market. >> reporter: the company had evidence as early as 1975 when its own tests showed some of the model 700s firing without the trigger being pulled. and this 1979 document indicates the company never knot a rekault. but it did switch from the walker trigger to the x-mark

pro. >> they admit that the new model was brought about because they had so many complaints with the older model. and the new model is worse than the old model. >> that's stunning. how soon after that did remington start getting complaints? >> soon. >> reporter: and they kept coming. gun fired when safety was taken off twice. trigger was not touched. three police departments complained. by early 2010, remington was getting videos claiming they captured the trigger going off on its own after the safety was released. >> you see the rifle did fire. >> never touch the trigger. >> reporter: for years despite the videos and testing hundreds of rifles, remington typically

marked cannot do. andthal government is allowed to recall toy guns, and then in february 2014. remington received this video. an experiment in his garage showing that spontaneous firing is more likely in cold weather. >> as you can see it fired. >> reporter: with the video all over yoourks remington didiths own tests in bitterer cold. in april 2014, the company announced a recall of over 1 million 300 wriefls. and remington continues to insist no one has been harmed by the x-mark pro defect.

go to cbs news.com and clikt on 60 minutes. make the most of a few minutes

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♪living well come on up, grandpa don't let joint discomfort keep you down. come play with us! i'm coming. upgrade to move free ultra's triple action joint support for improved mobility, and flexibility. it also provides 20% better comfort than glucosamine chondroitin, all from one tiny mighty pill.... get in there with move free ultra, and enjoy living well. ♪living well a group of parents in new york city is fighting for higher wages. the cost has doubled since 1997. but look at what the people

providing the care are getting paid. child care workers make an average of $9.77 an hour. that's only 61 cents than other food industry workers. it is 80% less than retailers on average. why some parents say the pay is just plain wrong. like most working parents they pay all they can to make sure their child goes to a premium day care. but last september four of his toddler's teachers quit. when he discovered what they were making, he was shocked. >> the teachers move on. why not leave it there. >> a hard day's work, deserve as hard day's pay and we felt

required us to speak out. >> wiener's daughter goes to a bright horizon child care city in new york. the publicly traded kwumpany grossed nearly something million, 932 locations and tuition can cost more than 30,000 a year. in a letterer signed by more than a dozen parents, wiener and others complaints that they earn allatal over a an hour. they have confirmed the details. of the letter. bright horizons is listed as one of the 100 best companies to work for all time.

>> they should be able to pay their bills. >> in a statement, bright horizons said they're prod to raise the bhar. and they claim to pay teachers more than the market average but the market itself may be the problem. adording to the labor of bureau and statistics. 9 snoiv an hour. and preschool teachers make about $4 an hour more. if half of them. >> many rely on public assistance. >> nationally about 1/3 of every edge skutants change every year. frrs turn over is a devastating

experience because during the early years they're building acatchments to their parents or their teacher. >> about seven years ago they switched from running. >> i will say that the center i work at is i still have to take a second job to make ends meet. trrs we have children's hands in our lives during the day and we're responsible for their care and educating them. >> reporter: those responsibilities are why teachers deserve to make more. >> how long? >> until we see ea change.

it may mean more for sglou. >> i'm okay with that.

the relentless rain in california has triggered evacuations. it has also created a rare sight 60 miles north of san francisco. something that hasn't been seen in over a decade. >> reporter: first the rain, now the drain. california's wet winter has bushed lake way beyond capacity, pouring water in its bath-like drain. the first time in 11 years. >> back in october we were half full. this is the first time the lake has been so low and filled up and spilled in one year. >> reporter: what looks calm at the top of the morning glory spillway looks like a raging

torrent at the bottom. it's 200 feet from the mont sello dam. 72 feet wide at its lip and narrowing to 28 feet at an outlet. when water in the lake rises to nearly 400, it spills over the lip of this funnel and pours into the creek 700 feet below. when this reservoir reaches capacity, it can take in 48,000 cubic feet of water. >> reporter: this is what the drain has looked like during california's drought. so dry it became aen unofficial skateboard park. the water started trickling in on friday. you might say a holy pilgrimage. >> see this. >> this is really something.

>> reporter: the spillway could keep flowing for the next couple of months. well, that's the overnight news for this friday. for some of you the news continues, for others, check back with us a little later for the morning news and of course "cbs this morning." from the broadcast center in new york city.

it's friday, february 24th, 2017. this is the "cbs morning news." >> how they portrayed the campaign, how they portrayed it and the transition. i's always wrong. >> blasts the media as the opposition party. hours from now, his boss takes the stage. organizers stage their own event after lawmakers across the country opt out of town hall meetings, citiaf