@CNN: After age 13, no new brain cells are created in a brain region linked to learning, according to a new study https://t.co/Rt2KCjvETR https://t.co/mB6SNE24xO

@CNN: After age 13, no new brain cells are created in a brain region linked to learning, according to a new study https://t.co/Rt2KCjvETR https://t.co/mB6SNE24xO