1. In 1855, the Cincinnati Society of Natural History was founded. It became one of the largest and most influential scientific societies in the country, with a focus on geology, botany, and archaeology.

2. In 1913, Ohio experienced one of its worst natural disasters when a deadly flood swept through Dayton and other towns in the Miami Valley. The flood killed over 400 people, destroyed over 20,000 homes, and caused millions of dollars in damage.

3. In 1954, the Cleveland Indians held their first-ever night game at Municipal Stadium. The game was a success, and night games soon became a regular part of the team's schedule.

4. In 1993, the Ohio State University men's basketball team won the NCAA Championship, defeating the University of Michigan Wolverines 81-73. The Buckeyes were led by star player and future NBA All-Star Jimmy Jackson.

5. In 2012, a tornado outbreak swept through Ohio, causing widespread damage and killing several people. The outbreak was one of the largest in state history, with over 50 tornadoes reported in a single day.