>> farai mentioned propublica, and we wanted to show you propublica's web site. it's an independent, non-profit newsroom that produces investigative journalism in the public interest. with a multi-year commitment from the sandler foundation, propublica tackles the big stories, including the detention dilemmas in guantanamo, the stimulus, and the bailout. they've been tracking who gets the money, and you can track it through institution as well as state. coming in at number one, the state of new york, thanks to aig. i enjoy their reporting blog reporting network, where i can follow what stories they're covering and see how i can help their collaborative reporting projects. in fact, propublica encourages other sites to steal their stories. they say, "go ahead and take any of our stories. just give us credit, and don't edit it." they also partner with other news organizations, like "60 minutes" and "the new york times." propublica, a new model for the future of news, frank. >> ok, guys. steal this story? maybe we're on to something here. but, dan, it's an interestin

. >> tonight on frontline, propublica reporter sebastian rotella investigates what the us knew about "a perfect terrorist." >> did they ask him about his work for the us government? >> we were told by the usa, "that is not to be asked." >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. and by reva and david logan. committed to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues. and by the frontline journalism fund, supporting investigative reporting and enterprise journalism. >> rotella: the evening of november 26, 2008, was calm in the city of lahore in eastern pakistan. in one neighborhood, a man was at home with his wife when he received a text on his phone. he had been waiting for the message. he was told, "turn o

joining us, the propublica reporter who broke the story.ave you back on the show. >> hi, rachel. >> the epa is not saying this water pollution is definitely coming from the fracking in wyoming. is there a reasonable alternate explanation as far as you can tell. >> there are a couple of alternative explanations. they all have to do with drilling if not the fracking process specifically. there are a bunch of waste pits that have contaminated the ground to some extent. the question is, have they gone into people's drinking water wells and what they announced this week, a thousand feet down into these monitoring wells? it's also possible there are other spilled substances from the drilling activities on the surface from trucks and so forth that have gotten into the wells. but they have -- they seemed to rule out agricultural causes which would be the other industrial activity in the area. no nitrates, no fertilizers, nothing like that. >> if in the big picture the federal government is not supposed to regulate fracking activity in terms of its

. >> ...but a joint frontline, propublica, and mcclatchy newspapers investigation raises serious questions about the government's case. tonight on frontline: "the anthrax files." >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. and by reva and david logan. committed to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues. and by the frontline journalism fund, supporting investigative reporting and enterprise journalism. >> one florida man is in the hospital with anthrax. >> ...is hospitalized with inhalation anthrax. >> narrator: in october of 2001, just weeks after 9/11, there was a chilling new wave of attacks. >> a 63-year-old man diagnosed with anthrax has died. >> anthrax reported at a florida hospital. >> the disturbin

." >> "a perfect terrorist," a frontline propublica investigation. >> frontline continues online withore on ramita navai's undercover journey in syria. >> a 14-year-old boy was killed here. >> learn more about syria's minority alawite community and their perspectives on the rebellion. plus, a map of where the rebellion is occurring. find out how key players in the region stack up on the conflict. read extended interviews... >> ...egyptian uprising and the tunisian uprising... >> ...uprising seemed to gain momentum... >> ...hanging with the regime... >> and follow frontline on facebook and twitter, or tell us what you think at pbs.org. >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. and by reva and david logan. committed to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation. ded

>> frontline, propublica and the time-picayune investigate "law and disorder." >> frontline continues online. track the medical marijuana laws and the price of pot in your state; see more of chim pom's artwork; read more of our interviews with dr. jeffrey brenner... >> it was really obvious that the most expensive people were getting terrible care. >> and don't miss our online exclusive reporting that raises new questions about the fbi's case against the alleged anthrax killer. follow frontline on facebook or twitter, or join the discussion at pbs.org. >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. and by revand david logan. mmitd to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues. and by the frontline journalism

anderson, as you can appreciate as somebody who's reported difficult stories and the people at propublica could understand, this is a hard subject to penetrate. it is not an easy story. every single sentence in the politico story was subject to elaborate reporting and pretty extensive editing process. and we shared what we were comfortable sharing, first on the basis of do we know it? not do we think it but do we know it? and then clearly, within the constraint of our sourcing agreements with some very difficult reporting. >> we asked your colleague, jonathan martin, on this program last night and didn't get an answer. i want the give you a chance to answer this question. was politico tipped off to the story by one of cain's rivals, as a cain rival as some including cain himself seems to be suggesting? >> and jonathan was on message last night, anderson. i'll tell you why i think it's important. this is a sensitive story. we haven't been reporting on innuendo or things we think we know and so in the public comments we have tried to stick very closely what was within the published story an

yesterday, as you probably know, propublica in conjunction with public broadcasting published an investigative report on back scatter machines, one they had become acceptable 20 use in airports, but the article summarizes health concerns raised by expermits over the past 15 years about these machines. i wanted to give you the opportunity because i know this has been in the news the last 24 hours, if you choose to respond to these concerns at this time. >> you know, thank you, mr. chairman. i did see the article yesterday, and it does contain a lot of information. i'm not sure all of it is accurate from the stand point of documenting all the different perspectives. clearly, it is an issue that we have looked at and continue to look at and work with safety and health officials to ensure that these back scatter evasive technology machines are as absolutely safe as can be, and all the independent studies done indicate they are well below any of the minimum doses recommended. i take senator collins recommendation to heart to have dhs do an independent study, and we'll take that up and do it because

read more from propublica reporter sebastian rotella about lashkar-e-taiba, the isi and headley. >> headley figured out every step of the attack. >> find out what a top indian investigator uncovered about the attacks. >> look, terrorists were given indian identity cards. >> learn about efforts to rebuild chabad house. follow frontline on facebook and twitter or tell us what you think at pbs.org. >> frontline is made possible by contributions to your pbs station from viewers like you. thank you. and by the corporation for public broadcasting. major funding is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. and by reva and david logan. committed to investigative journalism as the guardian of the public interest. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues. and by the frontline journalism fund, supporting investigative reporting and enterprise journalism. >> for more on this and other frontline programs, visit our website at pbs.org. >> frontlin