US scientists have created the first comprehensive atlas of brain development, charting how stem cells turn into neurons and other brain cells during early life. Using hundreds of thousands of human and mice cells, researchers mapped the precise genetic switches that guide each stage of cortical growth. The project, part of the U.S. BRAIN Initiative, gives neuroscientists an unprecedented reference for studying autism, schizophrenia and brain repair. https://www.nature.com/articles/d41586-025-03641-0?utm_source=substack&utm_medium=email #ShareGoodNewsToo