1. In 1980, the Idaho National Engineering Laboratory exploded, releasing radioactive material into the air. This incident, known as the "Green Run," caused concern among nearby residents and sparked a national debate on nuclear safety.

2. In 1864, the Idaho Territory was established by an act of Congress. At the time, the territory included parts of what is now Montana and Wyoming.

3. In 1933, the Idaho State Capitol building was completed. Designed by New York architects Charles H. Klauder and John V. Stevens, the building features Italian marble, bronze doors, and a rotunda topped by a dome.

4. In 1992, the "North Pole" expedition arrived in Idaho after traveling from the actual North Pole in a hot air balloon. The expedition was led by British adventurer David Hempleman-Adams and was the first successful attempt to travel from the North Pole to a mainland destination by balloon.

5. In 2005, the Idaho Supreme Court ruled that Governor Dirk Kempthorne had unlawfully vetoed a bill that would have raised the state's minimum wage. The ruling was a victory for labor advocates, who had pushed for the wage increase.