for the pbs newshour, i'm tania rashid from the kutupalong camp in bangladesh. >> woodruff: tomorrow night, in the final part of the series, tania rashid takes us inside the disturbing world of human trafficking in bangladesh. of woodruff: now, false news, and the challengombating it. since the 2016 electe have all become more aware of the problem. initial efforts to stop it or slow it have had mixed results at best. today, french presiden temmanuel macrd a joint session of congress false news is an "ever growing viru that threatens to "corrode the very spirit of democracy." erfacebook is front and cen all of this. tonight, miles orien begins a four-part series, spread over the next four dnesdays, about the larger problems including at lecebook, part of our weekly segment on "the ading edge" of technology. >> reporter: at facebook, the scale of everything is hard to grasp. the largest building at its headquarters in menlo park california spans a quarter mile, and sits beneath a lush, n acre rooftop park. it's vast, built into the landscape, and growing fast, ch like the force of huma

for the pbs newshour, i'm tania rashid in balukhali camp, bangladesh. wi nawaz: tomorrow, tania ll report on the epidemic of forced child marriage among the rohingya. >> nawaz: now, a historic f transpla a soldier who was injured in afghanistan and one nsthat could potentially trm his life in important ways. jeffrey brown speaks with a key member of the team behind the surgery about its potential impact. note for some viewers: o conversation is focused on sensitive issues involving the male anatomy. >> brown: they are horrificin physicalries that affect self-esteem and identity and are rarely even discussed. between 2001 and 2013, more than 1,300 men fighting in iraq and afghanistan suffered devastating injuries to the genitals from bomb blasts. today,urgeons at the johns hopkins school of medicine in baltimore announced the most complex transplant to date, of a penis, scrotum and part of the abdominal wall, from a deceased donor to a wounded soldier who has chosen to remain anonymous. the surgery was performed in eomarch and involved 11 su. one of them