for the pbs newshour, i'm julia griffin.s tracking down survivors who were as young as ten when they were raped.>> there were 72 allegations of onploitation and abuse in the u.n.'s c mission between may and september 2004. >> all of this is a immoral completely at odds with our mission. >> u.n. secretary-general kofi annan sent his scial adviser to investigate. he was shocked by what he found. >> i listened to what victims were saying. it was really disturbing. i said it was akin to a lifeguard jumping into a pool and instead of saving someone who was drowning, they actually drown them almost. s ms to be as cruel as that. >> reporter: fiv months later he published a report but criticized the u.n.'s ownve igations into alleged sexual abuse, but he said the main reaso offenders often evaded justice was because the u.n. had noriminal jurisdiction over its peacekeepers. >> the u.n. is not aovereign body at the most the u.n. can dismiss someone from service, but it cannot conduct its own trials.s thator the government themselves

the newshour's julia griffin has this profile. this profile. >> reporter: brian mccarty's camera chronicles the horrors of war. but unlike other war photographers, his subjects are plastic-- locally-found toys carefully arranged to recreate the experiences of children traumatized by conflict. it's all part of mccarty's ongoing "war-toys" project. >> "war-toys" is a photo series about children's experiences of war. through an art therapy based, approaildren essentially become art directorsy photos of locally found toys. >> reporter: mccarty's photographs are base drings children do in art therapy sessions organized by aid groups and united nations agencies. then, with the help of dolls, tanks another playthings from nearby vendors, he uses a camera's lens to tell the child's story, often at the exact ot where the trauma occurred. >> i harness what they have witnessed, what they have been through and give it to audiences that normally maybe wouldn't look at these things or think .bouthese things. >> reporter: the resulting igotograp

for the pbs newshour, i'm julia griffin. >> woodruff: and that's the newshour for tonig. on wednesday, it's a beautiful day in the neighborhood, preview of the mr. roger's documentary. i'm judy woodruff. join us online and again here tomorrow evening. for all of us at the pbsk newshour, thu and see you soon. >> major funding for the pbs newshour has been provided by: >> babbel. a language app that teaches real-life conversations in a new language, like spaniench, >> the ford foundati v. working wiionaries on the frontlines of social change worldwide. >> carnegie corporation of new york. supporting innovations in educatioga democratic ment, and the advancement of international peace and security. at carnegie.org. pp>> and with the ongoing t of these institutions and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like u. thank you. captioning sponsored by newshour productions, llc captioned by media access group at wgbh access.wgbh.org >> funding for "new scandinavian cooking"

n but as tshour's julia griffin reports, new, high- flying technology is helping researchers better understand the behavior of these usive predators. >> reporter: gliding above icebergs in antarctica, this drone footage looks like something out of a blockbuster nature documentary. but for marine ecologist dav johnston, the drone itself is a cutting edge tool for ocean science. >> drones are a technology that's really changing how we study a lot of things in marine environments. >> reporter: johnston leads duky univer marine robotics and remote sensing lab. the group uses fixed-wing and multi-rotor drones to study animal behavior and populations from above. it's a safer, cheaper and more precise method than theer helicoand planes traditionally used for aerial surveys. >> if we're out here and we're cruising along on our ship and we see a group of whales, we can launch the small boat, we can be there within minutes to be able to take advantage of tott. and that'sly revolutionary for our work. >> reporter: the boats johnston has been on lately have been floating near the western antarctic peninsu