Southern California Has An Active Nuclear Radiation Field! Hope your not living near it.

 

TIL that in 1959, an experimental nuclear reactor meltdown in Simi Valley (35 miles from Los Angeles) released an estimated 458 times more radiation than the Three Mile Island incident. The site remains radioactive to this day, which is surrounded by 500,000 people within 10 miles.

https://en.wikipedia.org/wiki/Santa_Susana_Field_Laboratory