These observations suggest that ducks have developed a way to sleep and look out for danger at the same time. It is still unknown if the half-asleep brain can process information. Nevertheless, it is intriguing to think what it would be like to sleep with one brain hemisphere asleep and the other hemisphere awake. Could workers catch a quick nap and still watch for their boss coming around the corner? Could students doze off in class and still pay attention to their teachers? Interesting possibilities!