The FBI hunts Chinese spies at an elite American children's hospital

Yu Zhou and Li Chen were a husband-and-wife team that had built their reputations on breakthroughs in cutting-edge medical therapies at Ohio’s elite Nationwide Children’s Hospital. Along the way, they’d also founded a Chinese company and sold it to a Nasdaq-listed biotech business worth more than $150 million. But Zhou and Chen’s careers took a dramatic turn on July 29 when federal agents arrested them for stealing medical secrets from the former employer.