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Fruit flies are tiny - and by that logic, they have a tiny brain. But even if it's small, it's incredibly complex. Now, after a decade long quest, scientists have managed to fully map the brain of the insect, in what many are calling a major breakthrough for neuroscience. Newshour spoke to Mala Murthy, a neurobiologist at Princeton University, who led the study. (picture: a fly's brain; credit - MRC/Nature)