Are you one of those people who are constantly planning their next adventure, counting down the days until you take off again and feeling restless when they seem too many? Chances are you have what scientists have termed the ‘wanderlust gene’. To understand this gene, first we need to delve into some basic neurochemistry. You’ve heard of dopamine, right? The little neurotransmitter that has been linked to everything from pleasure to addiction and Parkinson’s disease? If you’re wondering how one chemical can be responsible for such a vast range of outcomes, the important thing to note is that it’s the parts of our brains which receive dopamine that determine its effects.