News from the week of January 8: 1. A common marker of neurological diseases may play role in healthy brains https://go.nih.gov/SI28NcT 2. Residential addiction treatment for adolescents is scarce and expensive https://go.nih.gov/U2uDyTP 3. NIH-supported researchers create single-cell atlas of the placenta during term labor https://go.nih.gov/oUDhlV9 4. Reduced blood lead levels linked to lower blood pressure in American Indians https://go.nih.gov/aiIETUH