the team digs for nearly 2 and a half hours - until they reach the small gray box that holds the bones. the next step will be comparing the remains to dna from the family, though the results won't be known for months.

>> king county is going both directions with a low income fare of $1.50 and at the same time, fares will go up for richer riders to a high of $3.25 at peak hours. >> sort of a classically good-hearted seattle move to say "you folks need to ride the bus... ride it for $1.50". is this in its own way redistribution? >> it's not just about altruism though, you know? it's about economic development. we need to make sure workers can get to work. it's about economic opportunity. >> in a transit system that has had 5 fare hikes in 5 years, price is a sensitive point. san francisco is the only other major metropolitan area with a similar two teired system, with 20,000 people buying half price fare cards. in king county it could cost 7 to 9 million dollars in lost fare revenue every year, plus a few million more for administrative start up costs.

>> we're eliminating routes, we're cutting back service in some areas, there's pressure on the system in terms of money and we're saying "okay, we're gonna make things cheaper"... so it seems almost counter intuitive. >> yeah, well not everyone has the money to afford the kinds of fares we've arrived at in king county... we need 'em, we need 'em to bring in the revenue to keep the busses on the road. >> there was no vote on this the policy came out of a county council comity. the new fares, higher and lower, start in march.

>> the students' disappearance has been linked to the corruption of not just of the mayor of iguala, but also the city's police force... ...a problem common throughout mexico where cartels have been able to buy off local police in exchange for them looking the other way - or working for them. >> since the student were taken, the municipal police have been removed from this area and now what we're seeing is that it's

the federal police and the army in control of security here the problem is - that policy has been tried before and hasn't stopped the violence. in 2006, former president felipe calderon flooded mexico's streets with thousands of federal forces like the army and marines . ..and even now under the current president, enrique pena nieto kidnappings have reached record levels in some regions. like the state of tamaulipas just across the us border with texas we've come to the town of nuevo laredo. it's the headquarters of one of mexico's most violent cartels - the zetas we're here to meet raymundo ramos he runs one of the few human rights groups remaining in tamaulipas.

in most of the cases of disappearances that have been brought to raymundo, families believe it's not cartels that are responsible...but federal security forces. oralia told us the last time she saw

her husband jose was here in their home around 1am then, she says the marines told her and jose that they were mistaken and left. but a few minutes later, they came back. when she went outside, she says neighbors told her that they'd seen the marines put jose in their vehicle and drive off. so she got in her car and followed the convoy and finally she arrived here a motel in downtown nuevo laredo

this is footage shot by local journalists that night - oralia can be seen with her children as well as relatives and friends of other men that had been detained during the same operation masked men in uniforms that say 'marina' navy, in spanish stand watch outside >> oralia's son told her that he saw his father in the window - but then the curtain was drawn. in the aftermath the navy would change their story about the events of that night several times first they said they had no contact with the men. then later they said they had questioned them - and found them innocent -

and that they dropped them off in a different town 2 hours away. jose and the other men detained that night were never seen or heard from again.

we'd been told that there are some people who've been released after being held by security forces - but are too scared to speak about it. but we got lucky we found someone who was willing to tell us their story. so we had to change cars twice to be able to get here. we're going to talk to a woman who was allegedly kidnapped by the police and taken to a detention center that was run by the police. so this is very important - because it shows in a way the complicity between security forces and criminal organizations. and how difficult the corruption situation is in this country she agreed to speak with us if we protected her identity.

two months before we met her she was with her son in the car, driving home after work when she says they were stopped by armed men. she told us she and her son were beaten repeatedly and moved to different locations through the night and into the day - until their family realized what happened and was able to have them released.

she says a few weeks after they were released her son was called out onto the street by a group of men. when he left the house he was gunned down.

>> watch more "faultlines" on demand or visit aljazeera.com/faultlines. >> next monday a climate emergency. >> so a species could not be here in ten years. >> nasa steps in to help protect the future of the planet. >> the tropics regulate our climate. >> "techknow" heads to costa rica to see how one rainforest is fighting back. >> wow! some of these are amazing. >> "techknow's" team of experts show you how the miracles of science... >> this is my selfie, what can you tell me about my future? >> can affect and surprise us. >> don't try this at home. >> "techknow" where technology meets humanity. next monday, 5:30 eastern.

only on al jazeera america.

he's out there. there's a guy out there whose making a name for himself in a sport where your name and maybe a number are what define you. somewhere in that pack is a driver that can intimidate the intimidator. a guy that can take the king 7 and make it 8. heck. maybe even 9. make no mistake about it. they're out there. i guarantee it. welcome to the nascar xfinity series.

>> in the case of the students while there have been some allegations that federal forces could have been involved in the attack there's been no hard evidence. but there is the question - could they have stopped what happened that night? this is where three students were killed on september 26th and 43 others taken by the municipal police and handed over to criminal organizations. the military battalion is about a mile away from here25 but they say that they didnõt hear anything that night. this one shot that was fired that night whether or not they heard gunfire, the army never intervened. and since then

officials have said that the battalion never received an order to respond we repeatedly asked to speak with someone from the defense ministry but got no response. so we went to talk to jose francisco gallardo a former army general, to try to get insight into what may have happened.

omar says the only thing they wanted from the army was help for their injured friends.

despite there being a large military presence in guerrero as part of the government's operations against cartels even before the students were attacked criminal groups seemed to have no problem taking control of places like iguala... ...receiving regular payments from mayor jose luis abarca, and taking control of the local police going so far as to choose new recruits according to the government. >> what worries me the most is that you have a complete vacuum of state institutions that are supposed to investigate, to prosecute to prevent such level of forced disappearances like is happening in mexico.

>> edgardo buscaglia is an investigator who has worked with numerous governments and civil society to combat corruption particularly in mexico. >> pena nieto made a lot of noise about fighting corruption but you don't see any actions implemented yet. a perfect storm is taking place where the cost of kidnapping a human being and killing them is almost zero. >> our requests to speak with the president and the attorney general were denied. but at the beginning of our time in mexico, before the students were kidnapped, we did have a chance to speak to the country's interior minister... miguel osorio chong is one of pena nieto's closest advisors.

>> two months later, the 43 students from ayotzinapa were taken and disappeared.

juana and her family have one final step in the forensic process ... their dna will be compared to the remains they were given to find out if it is their daughter damaris...or someone else.

>> 5 months after the new test the family received the results from franco the remains the government gave them belonged to their daughter - damaris.

as the government tried to close the case of the missing students the parents and surviving students traveled to mexico city to press their case at the senate and even as president pena nieto told the country it was time to move on... the protests have continued, with the parents at the frontline, trying to make sure their sons are not forgotten ...in a war where it becomes increasingly unclear whose side the government is on.

four months after the students disappeared, the country's attorney general - without significant new evidence or forensic confirmation - declared them dead - essentially closing the case.

>> watch more "faultlines" on demand or visit aljazeera.com/faultlines. >> we pray for the children in the womb >> a divisive issue >> god is life , so it's his to take >> see a 10 year old girl who's pregnant, and you tell me that's what god wants... >> a controversial law >> where were you when the babies lives were being saved? >> are women in texas paying the price? >> fault lines al jazeera america's

hard hitting... >> today they will be arrested... >> ground breaking... they're firing canisters of gas at us... award winning investigative documentary series... access restricted only on al jazeera america i'm at the 45th agual forum meetings in davos switzerland, and about to lead a conversation about closing the infrastructure gap. most upped we are not building infrastructure or maintaining that that we have. some of that is because of a shift in how we gn the biggest -- finance the biggest infrastructure projects like power plants, roads, dams, railways. with interest rates at low, this may be the best time history to figure that problem out.