Insects account for as many as two-thirds of all creatures on Earth. Most of them have wings, but we do not actually know where the evolutionary origins of those wings lie. This debate got underway as early as the latter half of the 19th century, when On the Origin of Species was published, but to this day, the puzzle has never been solved. However, research using genome editing means that we might finally see the day when the answer to this conundrum is revealed.