It's a scene from a nightmare. Captured prisoners are purposely infected with deadly diseases, from plague to cholera and tuberculosis, exposed to freezing temperatures, given poisoned food, dissected ...

For decades, the nightmarish legacy of Japan's Unit 731 during World War II has been shrouded in secrecy, but a new scientific study is bringing much-needed attention to this dark chapter in history.

Chinese scholars are reigniting debate over Emperor Hirohito’s responsibility for Unit 731, a secret Japanese program that conducted brutal experiments and biological warfare in Asia. They argue that ...