The computer mouse, invented by Ken Kutaragi in the 1980s, has become a standard input device for personal computers worldwide.
The bullet train (Shinkansen), which began operation in 1964, was the first high-speed train system in the world and is still one of the fastest.
The 1995 Tokyo subway sarin gas attack by the Aum Shinrikyo cult shocked Japan and led to increased scrutiny of religious groups.