toing up, from nail salons will be daters, what is going on behind the scenes of places we raise it -- movie theaters, what is going on behind the scenes of >> from why we spend so much at the movies, to knowing if your dry cleaning is in fact claim, elizabeth vargas joins us with "ome true confessions as "20/20 goes behind the scenes. good to see you. what are some of the secrets we will find out? >> you might want to delay your manicure, pedicure appointments or your dry cleaning drop-off. we go behind the scenes with our spy cameras and our people dressed up and expose what really happened, which is a lot of these nail salons reuse tools on people's hands and feet that could give you terrible, dangerous infections. movie theaters -- the a dollar bag of popcorn -- a dollar bag of popcorn only cost eight cents to make, you do not know what is going on on the floor. it is difficult to see. then, of course, the dry cleaners -- what do they really do with your dry cleaning, do they get the stains out, what are they putting your close year in, and do not leave anything of value in your p

analysts are trying to recover dater apparently deleted from the pilot's personal flight simulator. 26 countries are involved in the search, looking for the plane in two giant arcs to the north and south of its last known location. let's go to kuala lumpur. he's standing in front of the police because of that incident with the two chinese relatives. jonah, you join us live. what's going on. >> reporter: you can see this line of police here, this is the journal it's hotel where we've been for the last 12 days, this is where the press conferences have been taking place every day. there are separate hotels where the relatives have been saying. today two chinese relatives decided to come here to speak to the journalists. they started speaking to chinese journalists downstairs. then the authorities obviously heard about it and they came and dragged them away. i was there when they were dragged away screaming and kicking down the stairs, put in another room. of course, the journalists had all heard about it by then. so they were following as well. now there's some sort of cordon set up to ke

malaysia's government is looking for help hoping some asian nations will have some dater.ers and crew come under the microscope, the search grows bigger. 25 nations on the hunt. retired navy pilot chuck nash will weigh in on the search. >>> russia showing no signs of backing down in ukraine as its troops ror

malaysia's government is looking for help hoping some asian nations will have some dater. as passengers and crew come under the microscope, the search grows bigger. 25 nations on the hunt. retired navy pilot chuck nash will weigh in on the search. >>> russia showing no signs of backing down in ukraine as its troops reportedly take over a natural gas distribution center. this comes after polls get ready to close in the strategic region of crimea, the people there expected to vote to split from ukraine and potentially join russia. we'll have a live report from kiev. congressman ed royce is here. first let's go to bangkok where david piper is following developments in the search for flight 370. david? >> reporter: the search for the missing plane has moved into an even more difficult phase over the last 24 hours. they're looking for it over a vast area of sea and land. that's because they found a major clue to where the plane might be. investigators say from analyzing satellite data they believe the plane flew on a northern or southern arc after turning away from original rou

then you got to listen for a pinging noise when you get in that area to try to lead you to the flight daterpit voice recorder and send down an unmanned sub if you get the pinging noise and pull it up. >> jay, if it went down in a catastrophic way, are you surprised that we're not seeing more debris? >> no, i'm not surprised about that, because these seas are very, very rough. the weather is perennially bad, and most of the heavy parts of the airplane would have fallen, sunk down to the bottom. the only debris that they're likely to find would be the lighter things like wooden pallets or seat cushions, smaller pieces. i how would they find out how far it's drifted, bob? >> they have computer modeling, woods hole did it in a crash five years ago. but computer models is computer modeling, you know. it's not exact. that's still not certain it will take you back to the right place. and you've got to get awful close if you have any hope of hearing the pinging noise from the submerged black boxes. >> if they can't find the black box before the signal dies, how does the search continue, jay? >> wel

literature you regarded on big data and potentially legal institutions was positing that big a to or small dater can be used to address the consumer market or get legal institutions to get better access to people who need legal our services. opinion onnow your dataher big data or small ta should provide more to individuals who cannot go to law firms or are not covered by legal aid. data? would you get the what kind of data? >> i think data can do a lot of things. the analogy i am hearing you ask about is like webmd which is the bane of physicians but also the boon of patients. you can go in and say i have malaria and they can say no. it also helps people be more informed and engaged in the process. it might be similar in legal services. i don't know. health care information is where we see the ability of people bringing information to deliver health care services that are better to those who might not be able to pay for it. it is trying to get information exchanges started. we don't have that yet in different industries. disparate, almost lcanized system. afterre was some concern the revelations

sometimes you know it you know sometimes you know what you don't know and sometimes as the fires on daters as if everything you know is wrong and i don't think you're wrong you are you're right. we're all the things that you're. doing you go what is wrong in movies and t.v. shows psychedelic drugs are portrayed as dangerous or even deadly in the two thousand and seven horror flick shrooms for example an american student studying abroad in ireland ends up killing all her friends after drinking tea spike has been mushrooms the trailer for that will be alone is probably enough to scare ninety percent of the population away from ever try and psychedelics check it out. and it's going. to get the. economy we want. to see what you. know that's a bad trip all hollywood exaggerations aside though there is a growing body of evidence that suggests that psychedelic drugs like l.s.d. can actually reduce stress and anxiety so if you think l.s.d. and other psychedelic drugs are dangerous and have no place in our society and everything you know is wrong joining me now for more on this is april short assoc