People seeing what they can do with the data from Google's research paper. They just finished mapping out the entire brain and central nervous system of the male fruit fly. https://research.google/blog/a-connectomics-milestone-mapping-the-complete-male-fruit-fly-brain/

This is Google's summary about why they're doing this research:

The common fruit fly, Drosophila melanogaster, has been central to scientific research leading to multiple Nobel Prizes. Fruit flies have been a fundamental model organism in genetics, thanks to their stereotypical behavior and short life cycle, and promise to do the same for neuroscience. While the thoughts of this fruit-loving insect might seem far removed from human cognition, the brains of vastly different species share many similarities. Because mapping the 86 billion neurons in a human brain is not yet possible, scientists are using AI to map the brains of smaller organisms, like fruit flies. This will help us decipher how animal nervous systems perceive the world, react to stimuli, and how damaged neural pathways might one day be repaired.