Tonia Reinys Fox is an Emergency Medicine physician and paraglider pilot. Armando Fox is a Professor of Computer Science at the University of California Berkeley (you may have taken his free Software Engineering MOOC on edX!) and classically-trained musician. We also enjoy skiing, scuba diving, birdwatching, backpacking, and adventure travel. We live in San Francisco, USA, and between the two of us, we have traveled to every continent. We usually travel together, but sometimes only one or the other of us is traveling on business. We are self-sufficient, low-impact travelers and we enjoy exploring new places by traveling on public transit, walking a lot, and visiting with the local residents as much as we can.