Scientists Discover Brain's Secret Wiring Map Using Tiny Code Labels

Scientists found an amazing new way to see how all the tiny parts of our brains are connected together—like discovering hidden pathways in a super-complicated city! They used special 'barcodes' [like tiny labels] made from RNA [the stuff that carries instructions in our cells] to map thousands of connections between brain cells in mice. This discovery could help doctors find and fix brain problems much earlier, and it might even help us understand how our own amazing brains work!