Radiation experts at Lawrence Livermore National Laboratory can't explain how particles of plutonium, one of the world's most dangerous radioactive elements ended up in popular Big Trees Park, adjacent to a school and a half a miles from their site.
Radiation experts at Lawrence Livermore National Laboratory can't explain how particles of plutonium, one of the world's most dangerous radioactive elements, ended up in popular Big Trees Park, adjacent to a school and a half-mile from their site.