Fruit fly brains are smaller than a poppy seed, but that doesn't mean they aren't complex. For the first time, researchers have published a complete diagram of 50 million connections in an adult fruit flies brain. The journal Nature simultaneously published nine papers related to this new brain map. Until now, only a roundworm and a fruit fly larva had been mapped in this way.Read more of science correspondent Jon Hamilton's reporting here. Want to know more about the future of brain science? Email us at [email protected] — we might cover it on a future episode! Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy