Trying to figure out a career field

I'm currently in college and trying to work out what field I want to go into afterwards. I plan to go to grad school, but I want to work for a few years to gain experience. I want to earn decent money and live in places all over the world. Ideally I'd move across the planet every 1-3 years for pretty much my whole career- I realize that's not super feasible, but at least a few different overseas postings would be ideal. I'm a social science major, if that makes a difference. I'm just looking for suggestions on industries right now- I still don't graduate for a few more years. Thanks!