China's brain chip breakthrough raises big questions

A coin-sized brain chip in China could help people with paralysis control devices using their thoughts. China has approved a brain-computer interface called NEO for commercial medical use in certain patients with paralysis caused by spinal cord injuries. That moves brain-chip technology out of research trials and closer to real-world medical care. Developed by researchers at Tsinghua University and Shanghai-based Neuracle Technology, NEO sits under the skull but rests on the brain's protective o