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♪ ♪ ♪ tonight on "nightline," there is no question that sex sells, but it is a risky business, and as another adult entertainer tests positive for hiv, can they are forced to play it safe? and they're tiny and adorable, and fighting the odds. we get an exclusive look as the zookeepers hold their breath and they say famously picky eaters shake, rattle and roll to our hearts. and backlash, news that

from new york city, this is "nightline," with dan abrams. good evening, thank you for joining us, porn stars are in the business of selling fantasy. but reality came crashing down this week with a new hiv positive diagnosis for one of their stars. and that is leading critics to say it is time to do more for the industry. it is a health crisis with big bucks and lives at stake. the question, can a business built on appearing raw and spontaneous be regulated with a different kind of restraint? abc's david wright looked at the story in 2011 and continues with

the latest. >> reporter: it is a multi-billion dollar business, some say bigger than baseball, football, and basketball combined. the question is, is it safe? >> animals have more protection in the making of films than porn performers. how many cases do there have to be before we take it seriously? >> reporter: this week, another adult film actor tested positive for the hiv virus. cameron bay tweeted she tested positive, thanks to everyone showing love, i feel stronger than ever. so far no other actor she worked with has tested positive. but the industry has temporarily halted all production as a safeguard. so when you had sex on camera did you feel like you were playing russian roulette? >> absolutely, you never know

how many people your partner that day has been with, since they had gotten their test. >> reporter: she quit the porn business, in part, because of the fearñr of disease. how important is this? >> it is very important, i think it is a ticking time bomb, it really is. it is not going to get any better. >> reporter: this happened before, in 2004, actor darrin james's test came back positive. >> i get the call, everything stops. i had the virus and my whole world just crashed. >> reporter: so you don't know how you got infected? >> i don't. >> reporter: did you infect anybody? >> three girls, i knew them, i felt bad. >> reporter: since then, they required safe guards requiring them to get an hiv test once a month. california's department of safety and health, the same group that requires construction workers to wear hard hats also

requires the adult film industry to protect workers associated with blood-borne pathogens, they state they must provide and ensure that employees use protective equipment, including condoms, dental dams, gloves and eye protections. but those rules are rarely enforced. the industry itself is rigorous about hiv testing but not about condom use. that may be partly to due of aesthetics. >> the whole point is to see something raw, and sexual. people should use condoms in real life, but when they see you on screen they don't really want to see that. >> reporter: and it seems to have everything to do with money. steve hirsch, one of the biggest porn producers spoke to "nightline" in 2009. >> the truth is, when people watch the adult movies they are watching it to see fantasy, they don't want to see condoms,

condoms in adult movies just don't sell, it is a fact. >> reporter: they say they don't want to use condoms, but they also say they would like to use 16-year-old girls and they don't want to do that. city and government officials don't want to deal with it ba because it deals with sex and pornography, that is a really bad reason. they required the condom use in l.a. county, it passed last year. some in the porn industry sued to overturn that decision, saying it was unconstitutional. and just last week their claim was rejected by a federal judge. but still, of all the major adult film producers only one studio requires condom use for all of their contract stars. wicked pictures. >> most of the companies frown upon it. if you are coming in saying, you know, i want to wear a condom, chances are they're going to take the girl that is going to

do it without the condom. >> reporter: there have been any number of current actresses who say it does not bother them, are they telling the truth? >> i think they're not thinking about it. they're thinking about the money and getting work. >> reporter: it is not just the porn stars at risk. if it is not too rude a question, how many stars would you have sex with? >> a girl could shoot 15-20 times a month. that could be multiple partners. if she is escorting, it could be ten or 15 added to that a month, and whatever her personal life is. >> reporter: and what is to stop the film producers from filming in santa barbara and just about anywhere else? well, some say the law. >> making the pornography is considered prostitution. so it is only allowed in new it gets kind of cold in new

hampshire. >> reporter: many say the measure requiring the condom use could simply drive the production underground. already, the industry is packed with porn produced on the cheap with little or no safeguards. >> meanwhile, the business just moves right along. it will get worse. >> reporter: gina rodriguez is thankful she made it out of the business with a clean bill of health. i'm david wright in los angeles. seems some changes are needed. next, why is it so hard for babyñi pandas to survive? an exclusive look inside their world here in the u.s. abc news "nightline," brought to you by joseph a. bank.

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it was a high profile, beautiful birth in our nation's capitol today. the baby? a giant panda. cute, seemingly cuddly, and yet these pandas may just be the least adaptable animals on the planet. and seemingly on brink of extinction. last month, two were born in the united states. abc has exclusive access as we go through the trial tribulations of being the most adorable bear. >> reporter: squeezing. >> virtually the size of a

football. brotherly love, look at that. >> reporter: but also dangerously fragile, abc news got exclusive access to the nursery of the only panda twins in the country. here at zoo atlanta and to their routine, in which a team of vets led by dr. haley murphy measure and examine these still tiny giant pandas. >> he doesn't even have any hair on his tail yet. >> reporter: which for now, they're calling cub a, and you guessed it. cub b. >> these are the only panda twins to ever survive in the united states. >> reporter: ever? >> ever. >> reporter: and now that they're a couple of months old? >> they're 37 days old today. >> reporter: does that mean they have a good chance to survive? >> yes, we're very hopeful, past the first week, the chances go up. >> reporter: they're cute, but

evolutionary challenged, they are picky about their food. >> they tell us what variety of bamboo they like that day and they will try to find that variety. but they will also cut extras to have a safety net. so yeah, they eat a lot of bamboo. >> reporter: they're animals that can only breed once a year, in a tiny two-day window. once in china, they were coming back from extinction. with a lot of human help. and here in the u.s., there seems to be a baby panda boom. >> here we saw it, we saw her water break, at that point, more people came in. we continued to watch her and at 5:32, she had a cub born. >> reporter: at the smithsonian's national zoo in d.c., the panda, may jong, seen here on the camera, was in labor

this afternoon, giving birth to a squauking little cub. >> she will be the poster child for a great panda mom, she is holding the cub and cradling it. at this point, everything was great and we're very pleased. >> reporter: in july, they knew that their panda was pregnant. but they only knew half the story. so how surprised were you? >> well, we didn't believe it. one came out. we were all happy, she was showing the appropriate maternal behavior. and then another one came out. and the room went silent, we were all shocked. and right away, we took the cub out. because she didn't know what to do with two cubs. >> reporter: what happened was a full-scale mission to save both cubs. it had never been done anywhere. all pandas are technically owned by the chinese and leased to

american zoos. so a chinese vet arrived for the birth and ended up sleeping in the nursery to ensure the two new cutest fur balls on the planet survive. the pandas are about the size of a stick of butter, no eyes and ears, no ability to move on their own. their body takes shape and eventually they become cuter. now 38 days in, really cute. >> the micro-environment, the humidity, temperature, everything has to be done. we have to assimilate them to urinate and defacate. >> reporter: and there is a strict, sanitary regime. >> we have to keep them as clean

as we can. >> reporter: i did as i was told. >> all right, all refreshed? >> reporter: i'm totally refreshed. then the whole abc crew had to slip on booties. it went better for the crew than it did for me. inside the nursery, rubbing alcohol flows freely, for hygiene, of course. >> and you have to take that band off. we use our hands almost constantly in here, it is really strong. kills almost anything. >> reporter: each one is eased back into the incubator, it is undeniable they are very cute. they're not soft? >> they're not soft. >> reporter: trying to flip them over. >> you want to help me with the measurements? >> reporter: i can help you. >> you can help me?

i'm not getting go of the panda. >> reporter: so you want me to physically hold him down? okay, just like that, make sure he doesn't go off the table. >> the only thing we need to do before we put him back in is get a temperature. >> reporter: is it the same way you take a baby's temperature? >> no -- well, i don't know, how do you take a baby's temperature? in the butt? >> reporter: in the butt. >> we do it when they're really little -- >> reporter: it is much more humane. >> so you are one of the only people in the world that touched a baby panda. >> reporter: >> reporter: it is an amazing thing, is it hard not to become attached to them? >> oh, we're all attached. we haven't had a day off, but when you do get a day off you miss them. they change so much, when you come back from a day off they're totally different. >> reporter: what murphy doesn't think about is their names. according to panda tradition, they are only named when they're

100 days old. do you guys have a favorite name? >> a and b, that is our favorite name. >> reporter: so murphy is not going there yet. for "nightline," i'm matt gutman in atlanta. >> the cubs won't make their public debut for a couple of months. here is hoping they are thriving for us and our kids. >> next, ben aftfleck and the choice to play batman. you can. [ male announcer ] red lobster's endless shrimp! as much as you like, any way you like! you can have your shrimp. and you can eat it, too. [ male announcer ] try our new soy wasabi grilled shrimp or classic garlic shrimp scampi. all just $15.99 for a limited time. it's gonna be a hit this year. [ male announcer ] red lobster's endless shrimp is now! we would never miss endless shrimp. [ male announcer ] but it won't last forever. so come and sea food differently. [ male announcer ] but it won't last forever.

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. in tonight's "feed frenzy," super bad. if you have been anywhere near a computer or tv in the past 24 hours or even just clutching your smartphone, the news has seemed unavoidable. ben affleck, chosen to play batman in the man of steel. the reaction? not nice, it is not the first time affleck has played the super hero role. he played george reeves in hollywood, 2006, or more

famously, daredevil. he met his wife on set. but the less than stellar performance had affleck swearing off super hero movies forever. and it seems that many would have been happy if he stuck to his word. 77% polled said affleck is the wrong choice. haters are going to hate. so why is affleck so controversial? wasn't he kind of a super hero in "argo"? wasn't he kind of great as the man behind superman? why doesn't he get any social media cred for that? my theory? many just hate the fact that a popular, famous mainstream actor was chosen for the role. putting aside social media hero ryan gosling, which side would have supported him? brad pitt? i think affleck is a solid, great choice.

and digging up other controversy? i should say i collected daredevil comics as a kid, and my support for him as a kid doesn't mean i'm necessarily happy to have him as a daredevil. what do you think, tweet us. tune into "good morning america" tomorrow. and as always, tweet us at abcnews.com.