1. Idaho became a state on June 12th, 1890. Idaho was the 43rd state to join the United States.

2. The Idaho state flag was adopted on June 12th, 1907. It features the state seal and the words "State of Idaho" on a blue background.

3. On June 12th, 1978, the Sawtooth National Recreation Area was established in central Idaho. The area encompasses over 756,000 acres of wilderness, forests, and high mountain peaks.

4. The world's first nuclear power plant to generate electricity for a public power grid began operating on June 12th, 1953, in Arco, Idaho. The plant, called the Experimental Breeder Reactor-1, was decommissioned in 1964.

5. The infamous Unabomber, Ted Kaczynski, was arrested on June 12th, 1996, at his cabin in Montana, which was located near the border of Idaho. Kaczynski was responsible for a series of bombings that killed three people and injured 23 others over a 17-year period.