At the NGT office, we’re all too familiar with waking up one morning with an urgent, gripping need to travel. Turns out, the cause for this crazy need may be out of our control. Researchers have often linked two variants of the DRD4 gene to an inclination towards novelty, exploration, restlessness, risk-taking, ADHD and even human migration. This video by Discovery News explains how travelling could be in our DNA and how our genetic make-up facilitates our adventures. Watch it below.