reporter: these flight attendant and airport workers training to recognize sex traffickers among the thousands headed to the super bowl. criminals transporting women and children to new york against their will. not for the biggest weekend in football, but for the biggest weekend in prostitution. any major event where there s going to be a lot of men, a lot of money and a lot of alcohol, there s an increase in demand for commercial sex. reporter: in fact, the number of prostitution ads in new york websites jumped by 50% over the weekend, expected to triple by sunday. a counterattack, new billboards in times square, madison square garden and videos played in major train and bus stations. it s time to open our eyes. these are places we know that victims end up. they will see these billboards. they ll know someone s out there to help them. reporter: the training works. in boston a child prostitution ring smashed. 86 children freed after an airline worker noticed a man traveling
in through southern california so we are talking about temperatures dropping and even the first big rainmaker early in the season for southern california. a lot going on. sorry about the cool weather today. a big difference. it s okay. thank you. we are always happy to have you back. thank you. man s best friend could be the ultimate cancer detectors. canines at the university of pennsylvania s working dog center are being trained to detect ovarian cancer. so wind up some of the compounds in ovarian cancer have a distinctive smell and dogs with their sensitive noses can sniff it out if the training works. researchers hope they will be able to isolate the compound and develop an electronic nose that can sense those compounds too. earlier detection may help save more women s lives. that is a tough cancer to detect so breaking. i ve been down to the university of pennsylvania with their work with dogs and it is