Think about all the different ways there are to travel. There's flying, driving, and sailing, of course, but let's focus on the low-tech methods of locomotion, like walking, running, crawling, swimming, and brachiation. Not familiar with that last one? I wasn't either, until I wrote something about gibbons and stumbled across the term. Brachiation is a specialized form of arboreal locomotion in which primates swing from one branch to another using their arms. And while it's probably not going to help you navigate the streets of Bangkok, no self-respecting traveler should be without at least a basic understanding of it. ]]>