On this day, chemists discovered a substance 900 times more radioactive than uranium. Their research led to unprecedented medical breakthroughs and worldwide fame — but it would also kill one of them.

As the journalist whose investigative reporting for the Salt Lake City Deseret News led the way to passage of the Radiation Exposure Compensation Act (“Josh Hawley’s Nuclear Meltdown” by Luke Lyman, ...

"Dogs at Chernobyl are now genetically distinct … thanks to years of exposure to ionizing radiation, study finds." ...