On this day in history April 26,
- 1970 – The Convention Establishing the World Intellectual Property Organization enters into force.
- 1981 – Dr. Michael R. Harrison of the University of California, San Francisco Medical Center performs the world’s first human open fetal surgery.
- 1982 – Fifty-seven people are killed by former police officer Woo Bum-kon in a shooting spree in Gyeongsangnam-do, South Korea.
- 1986 – A nuclear reactor accident occurs at the Chernobyl Nuclear Power Plant in the Soviet Union (now Ukraine), creating the world’s worst nuclear disaster.
- 1989 – The deadliest tornado in world history strikes Central Bangladesh, killing upwards of 1,300, injuring 12,000, and leaving as many as 80,000 homeless.
- 1989 – People’s Daily publishes the People’s Daily editorial of April 26 which inflames the nascent Tiananmen Square protests
- 1991 – Seventy tornadoes break out in the central United States. Before the outbreak’s end, Andover, Kansas, would record the year’s only F5 tornado (see Andover, Kansas Tornado Outbreak).
- 1994 – China Airlines Flight 140 crashes at Nagoya Airport in Japan, killing 264 of the 271 people on board.