When new color tvs were radioactive
Testing in 1967 revealed that as many as 112,000 color television sets were radioactive.

exc-5c3f9234c2241bd6fab06f08
According to a recent post from Mental Floss
Testing in 1967 revealed that large-screen models of GE color televisions sets were emitting radiation that exceeded safe levels, according to a recent story by The Atlantic. After further investigation it was clear that the problem wasn’t limited to GE: Radiation was detected in color models made by nearly every television company at the time, which meant as many as 112,000 sets were radioactive.
Yikes.