explore additional reporting on the industry from our partners at propublica. learn about the debate in washington over regulating senior care. plus, read our extended interviews with emeritus ceo granger cobb... >> human beings will make mistakes. >> ...and others. and follfrontline on facebook and twitter or at pbs.org/frontline. >> frontline is made possible by contributions to your pbs station from: and by the corporation for public broadcasting. major support for frontline is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. more information is available at macfound.org. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues. the wyncote foundation. and by tfrontline journalism fund with a grant from millicent bell through the millicent and eugene bell foundation. captioned by media access group at wgbh access.wgbh.org >> for more on this and other frontline programs, visit our website at pbs.org/frontline. frontline"lif

propublica, saying it might prompt foreign targets oswitch to new forms of encryption or communications that would be harder to collect or read. >>> both news organization he said they removed some specific facts, but decided to publish because of the value of the public debate about government actions that they say weakened the most powerful tools for protecting the privacy of americans and others. but how much information is too much? joining me now to talk about the latest revelations from former nsa analyst edward snowden are james larson a reporter for propublica, and james barrett, britain's equivalent of the cia. and matthew green a cryptography researcher from johns hopkins university. i thank you gentlemen for joining us today. fascinating story jeff looking through these documents. the laterrest dump of documents from edward snowden is again enormous. what is the most striking piece of information you want to cover? >> well, i think the fact that the nsa has waged a decade long war against the encryption we use every day oprotect our communications. in the '90s we had this sor

. >> frontline and propublica reporter a.c. thompson investigate. >> did you worry i could do something that leads to somebody's death? >> all the time. >> "life and death in assisted living." >> go to pbs.org/frontline for a closer look at egypt's deep state. >> it is really very deep. >> this underlying set of structures that's running things. >> a timeline of the two years of turmoil following egypt's revolution. additional reporting from our partners at global post. plus watch the film again online and follow frontline on facebook and twitter or tell us what you think at pbs.org/frontline. >> frontline is made possible by contributions to your pbs station from: and by the corporation for public broadcasting. major support for frontline is provided by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant, and peaceful world. more information is available at macfound.org. additional funding is provided by the park foundation. dedicated to heightening public awareness of critical issues.

. >> why did you choose to elaborate with "the new york and propublica? we had to find american partners. it was clear our reporting would be made very difficult in the u.k. america,ok around there are not limitless options of people who could handle a very big story. resources, a lot of technical knowledge, legal backup. "the new york times does quote is a great paper with that kind of backup. example ofis a great a smaller example but also has expertise. >> did you want to spread the information around in case your axis was jeopardized? >> it is prudent and one of the reasons that we went to both, but the more people want you to -- the more people you have involved, the harder it is to lean on one. margaret sullivan said that many times readers have been writing to her about a story that the guardian had broken about how the u.s. routinely shares with israel intelligence information that the nsa gathers on american citizens. can you talk about what you wrote? this is another one of those stories that describes the intersection between american intellige

. >> tonight ofrontline, correspondent lowell bergman joins with propublica in an investigation of one of the increasingly controversial tools of the criminal justice system: forensic science. >> there is something that people need to understand about bad expert witness testimony and bad science: it doesn't just put innocent people in jail, it leaves murderers on the street. >> 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 tfrontline journalism fund, with a grant from millicent bell, through the millicent and eugene bell foundation. >> bergmacsi is the most watched drama series in the world, brimming with flash and glam