Sun, sand, surf - and sex. Whether it's students on Spring Break or married couples stealing away for a weekend, everyone knows that getting away from it all is a great time to get closer. But what is it about travel that drives human libido into another time zone? And what makes some travelers take risks they never would at home - like paying for sex? Social science researchers Ed Herold, Eleanor Maticka Tyndale, Jaqueline Sanchez-Taylor and neurobiologist James Pfaus explain why and how humans change the rules of sexual behavior on vacation. But we also hear from vacationers themselves. We head south to see travelers in action: from 20-somethings gone wild, to married couples gone more wild, to Jamaican men who call themselves Beach Boys and make their living selling sex. This is one trip you don't want to miss.