that night in iguala sti haunts him. omar: even if we get justice one day, this will continue to shape our lives. this terrible crime scarred us. we are fighting to make sure this never happens again. reporter: forensic architecture is a way to remember, and maybe to even help find the truth. host: around the world, new technologies have become almost essential in many areas of our lives. even the search for a partner has become a digital affair. in 2015, more than one in four young adults in the u.s. used an online dating platform. and last year inin asia, 133 millioion people usesed intert dating services. does that mean that the good old-fashioned way of meeting people without the internet is now tototally out? t whwhen it comes to south korea. there, blind dates organized by friends are in great demand. this is dating analogue-style. report: young-g- is used to being the ntnter of tentntion. as a a model, she e regularly s araround the wororld, earning d momoney. very gogood, in fact.t. her r parents are e proud of .