In this Special Feature, we look at what studies have found out about sleep techniques and memory consolidation.   Can we harness sleep to enhance learning and memory? The role of sleep in memory has long been a topic of interest for scientists, with slow-wave sleep being particularly important for this process. Now, new research reveals how new techniques could help us harness the power of sleep, especially during deep sleep, to enhance our ability to retain and recall information. A recent study, published in Nature , investigated the effect of a specific odor on memory consolidation during sleep. Participants who were exposed to a rose scent while learning vocabulary words, and then again during sleep, showed improved performance on a test compared with those who did not receive the scent cue. This study builds upon previous research suggesting that sensory cues, such as sou